1. Published

   Problems encountered when using high frequency financial market data: suggested solutions.

   ap Gwilym, O. M., Ap Gwilym, O. & Sutcliffe, C., 1 Jan 2001, In: Journal of Financial Management and Analysis. 14, 1, p. 38-51

   Research output: Contribution to journal › Article › peer-review

2. Published

   Credit default swaps: Theory and Empirical Evidence.

   ap Gwilym, O. M., Meng, L. & Ap Gwilym, O., 1 Mar 2005, In: Journal of Fixed Income. 14, 4, p. 17-28

   Research output: Contribution to journal › Article › peer-review

3. Published

   Comparative analysis of the tax systems faced by the visitor economies in selected countries

   ap Gwilym, R., Closs-Davies, S., Jones, E. & Rogers, H., 8 Nov 2022, GSR report number 70/2022 ed. Cardiff: Welsh Government.

   Research output: Book/Report › Other report

4. Published

   Futures market liquidity under floor and electronic trading.

   ap Gwilym, O. M., McManus, I., Ap Gwilym, O., Thomas, S., Morrey, J. (Editor) & Guyton, A. (Editor), 1 Jan 2009, Liquidity: Interest Rates and Banking. 2009 ed. Nova Science, p. 111-138

   Research output: Chapter in Book/Report/Conference proceeding › Chapter

5. Published

   U.S. prompt corrective action and bank risk

   ap Gwilym, R., Kanas, A. & Molyneux, P., 1 Oct 2013, In: Journal of International Financial Markets, Institutions and Money. 26, p. 239-257

   Research output: Contribution to journal › Article › peer-review

6. Published

   Microstructure effects, bid-asks spreads and volatility in the spot foreign exchange market pre and post-EMU.

   ap Gwilym, O. M., McGroarty, F., Ap Gwilym, O. & Thomas, S., 1 Sept 2006, In: Global Finance Journal. 17, 1, p. 23-49

   Research output: Contribution to journal › Article › peer-review

7. Published

   The impact of sovereign rating actions on bank ratings in emerging markets

   ap Gwilym, O. M., Williams, G. L. & Alsakka, R., 1 Feb 2013, In: Journal of Banking and Finance. 37, 2, p. 563-577

   Research output: Contribution to journal › Article › peer-review

8. Published

   Prospective utility and the equity risk premium.

   ap Gwilym, O. M., Thomas, S., Ap Gwilym, O. & McManus, I., 1 Jan 2007, In: Professional Investor. 17, 7, p. 24-28

   Research output: Contribution to journal › Article › peer-review

9. Published

   The lead-lag relationship between the FTSE100 stock index and its derivative contracts.

   ap Gwilym, O. M., Ap Gwilym, O. & Buckle, M., 1 Aug 2001, In: Applied Financial Economics. 11, 4, p. 385-393

   Research output: Contribution to journal › Article › peer-review

10. Published

    Dividend yield investment strategies, the payout ration and zero-dividend stocks.

    ap Gwilym, O. M., Ap Gwilym, O., Seaton, J. & Thomas, S. H., 1 Dec 2005, In: Journal of Investing. 14, 4, p. 69-74

    Research output: Contribution to journal › Article › peer-review

11. Published

    Heterogeneity of sovereign rating migrations in emerging countries.

    ap Gwilym, O. M., Alsakka, R. & Ap Gwilym, O., 1 Jun 2009, In: Emerging Markets Review. 10, 2, p. 151-165

    Research output: Contribution to journal › Article › peer-review

12. Published

    The components of electronic inter-dealer spot FX bid-ask spreads.

    ap Gwilym, O. M., McGroarty, F., Ap Gwilym, O. & Thomas, S., 1 Nov 2007, In: Journal of Business Finance and Accounting. 34, 9-10, p. 1635-1650

    Research output: Contribution to journal › Article › peer-review

13. Published

    Size clustering in the FTSE100 index futures market.

    ap Gwilym, O. M., Ap Gwilym, O. & Meng, L., 1 May 2010, In: Journal of Future Markets. 30, 5, p. 432-443

    Research output: Contribution to journal › Article › peer-review

14. Published

    The role of payout ratio in the relationship between stock returns and dividend yield.

    ap Gwilym, O. M., McManus, I., Ap Gwilym, O. & Thomas, S., 1 Nov 2004, In: Journal of Business Finance and Accounting. 31, 9-10, p. 1355-1387

    Research output: Contribution to journal › Article › peer-review

15. Published

    ‘Nearly Stationary’: The use of silence in Cage’s String Quartet in four parts.

    ap Sion, P. E., Ap-Sion, P. E. & Barnett, R., 1 Jan 2006.

    Research output: Contribution to conference › Paper

16. Published

    Michael Nyman: Collected Writings

    ap Sion, P. E. (Editor), 1 Aug 2013, 2013 ed. Ashgate.

    Research output: Book/Report › Book

17. Published

    Three Studies for Piano.

    ap Sion, P. E. (Composer) & Ap-Sion, P. E. (Composer), 1 Jan 2004

    Research output: Non-textual form › Composition

18. Published

    Emyn.

    ap Sion, P. E. (Composer) & Ap-Sion, P. E. (Composer), 17 Jan 2003

    Research output: Non-textual form › Composition

19. Published

    Towards an understanding of the perception of sounds, silences and repetition in American experimental and minimal music.

    ap Sion, P. E., Ap-Sion, P. E., Evans, T. & Barnett, R., 1 Jan 2006.

    Research output: Contribution to conference › Paper

20. Published

    Michael Nyman and the Development of an Art House Musical Aesthetic

    ap Sion, P., 12 Dec 2022, Michael Nyman and the Development of an Art House Musical Aesthetic. Baumgartner, M. & Boczkowska, E. (eds.). 1 ed. New York: Routledge, Vol. 1. p. 87–112 25 p. 3

    Research output: Chapter in Book/Report/Conference proceeding › Chapter › peer-review

21. Published

    Sticio neu switsio?

    ap Sion, P., 1 Aug 2023, In: O'r Pedwar Gwynt.

    Research output: Contribution to journal › Article

22. Published

    Die verrückten mädchen von Mona: for Soprano and Piano Trio

    ap Sion, P. (Other), 16 Oct 2021

    Research output: Non-textual form › Composition

23. Published

    In Memoriam R.S. Thomas.

    ap Sion, P. E. (Composer) & Ap-Sion, P. E. (Composer), 1 Jan 2001

    Research output: Non-textual form › Composition

24. Published

    Direct Injection.

    ap Sion, P. E. (Composer) & Ap-Sion, P. E. (Composer), 1 Jan 2002

    Research output: Non-textual form › Composition

25. Published

    Hiraeth (10’)

    ap Sion, P. E. (Composer) & Ap Sion, P. (Composer), 8 Nov 2013

    Research output: Non-textual form › Composition

26. Published

    Sefi/Syvi (18’)

    ap Sion, P. E. (Composer) & Ap Sion, P. (Composer), 1 Jan 2013

    Research output: Non-textual form › Composition

27. Published

    “Only pictures to hear”: Reading Einstein on the Beach through Experimental Theater

    ap Sion, P., 19 Dec 2019, Einstein on the Beach: Opera beyond drama. Novak, J. & Richardson, J. (eds.). Routledge Taylor & Francis, 33 p. (Ashgate Interdisciplinary Studies in Opera).

    Research output: Chapter in Book/Report/Conference proceeding › Chapter › peer-review

28. Published

    Welsh music [4] contemporary.

    ap Sion, P. E., Ap-Sion, P. E. & Koch, J. T. (Editor), 1 Jan 2006, Celtic Culture: A Historical Encyclopedia. 2006 ed. ABC Clio, p. 1768-1769

    Research output: Chapter in Book/Report/Conference proceeding › Chapter

29. Published

    Blodwen.

    ap Sion, P. E. (Composer) & Ap-Sion, P. E. (Composer), 1 Jan 2003

    Research output: Non-textual form › Composition

30. Published

    The Music of Michael Nyman.

    ap Sion, P. E. & Ap-Sion, P. E., 1 Jan 2007, Ashgate.

    Research output: Book/Report › Book

31. Published

    Towards a Typology of Code Mixing in Recent Welsh-language Popular Music.

    ap Sion, P. E. & Ap-Sion, P. E., 1 Jan 2006.

    Research output: Contribution to conference › Paper

32. Published

    Towards a Typology of Code mixing in Recent Welsh-language Popular Music.

    ap Sion, P. E. & Ap-Sion, P. E., 29 Oct 2007.

    Research output: Contribution to conference › Paper

33. Published

    Le Cheval Gris.

    ap Sion, P. E. (Composer) & Ap-Sion, P. E. (Composer), 1 Jan 2003

    Research output: Non-textual form › Composition

34. Published

    Gwales.

    ap Sion, P. E. (Composer) & Ap-Sion, P. E. (Composer), 21 Sept 2003

    Research output: Non-textual form › Composition

35. Published

    Nationhood and the Welsh Composer.

    ap Sion, P. E. & Ap-Sion, P. E., 29 Oct 2005.

    Research output: Contribution to conference › Paper

36. Published

    ‘Yn y Fro’: Mudiad Adfer a’r Canu Pop Cymraeg yn ystod y 1970au.

    ap Sion, P. E. & Ap-Sion, P. E., 1 Jan 2002, In: Hanes Cerddoriaeth Cymru. 5, p. 162-189

    Research output: Contribution to journal › Article › peer-review

37. Published

    Christophe Levaux, We Have Always Been Minimalist: The Construction and Triumph of a Musical Style, trans. Rose Vekony

    ap Sion, P., 21 Dec 2021, In: Twentieth-Century Music. 18, 3, p. 481–487 7 p.

    Research output: Contribution to journal › Book/Film/Article review › peer-review

38. Published

    Birth-Childhood-Death.

    ap Sion, P. E. (Composer) & Ap-Sion, P. E. (Composer), 1 Jan 2005

    Research output: Non-textual form › Composition

39. Published

    American Minimalism in Europe during the 1970s

    ap Sion, P. E., 4 Dec 2015, Unknown Publisher.

    Research output: Book/Report › Commissioned report

40. Published

    Painters of Spain.

    ap Sion, P. E. (Composer) & Ap-Sion, P. E. (Composer), 1 Jan 2003

    Research output: Non-textual form › Composition

41. Published

    Cydymaith i Gerddoriaeth Cymru

    ap Sion, P. (Editor) & Thomas, W. (Editor), 1 Oct 2018, Y Lolfa. 464 p.

    Research output: Book/Report › Book › peer-review

42. Published

    Michael Nyman.

    ap Sion, P. E., Ap-Sion, P. E., Sadie, S. (Editor) & Tyrrell, J. (Editor), 1 Jan 2001, The New Grove Dictionary of Music and Musicians. 2001 ed. Macmillan, Vol. 18. p. 247-249

    Research output: Chapter in Book/Report/Conference proceeding › Chapter

43. Published

    The Illusion of Freedom

    ap Sion, P. E. (Composer), 5 Mar 2015

    Research output: Non-textual form › Composition

44. Published

    Understanding Minimalist Film Music: The Case of Man on Wire

    ap Sion, P. E., 1 Jun 2012, In: Soundtrack. 5, 1, p. 51-66

    Research output: Contribution to journal › Article › peer-review

45. Published

    Emyn i Gymro (12’)

    ap Sion, P. E. (Composer), 1 Feb 2014

    Research output: Non-textual form › Composition

46. Published

    Piano Trio.

    ap Sion, P. E. (Composer) & Ap-Sion, P. E. (Composer), 1 Jan 2005

    Research output: Non-textual form › Composition

47. Published

    Parallel Symmetries? Exploring Relationships between Minimalist Music and Multimedia Forms.

    ap Sion, P. E., Ap-Sion, P. E. & Evans, T., 1 Jan 2007.

    Research output: Contribution to conference › Paper

48. Published

    Reference and Quotation in Minimalist and Postminimalist Music

    ap Sion, P. E., Potter, K. (Editor) & Gann, K. (Editor), 1 Dec 2013, The Ashgate Research Companion to Minimalist and Postminimalist Music. 2013 ed. Ashgate, p. 259-278

    Research output: Chapter in Book/Report/Conference proceeding › Chapter

49. Published

    Divertimento.

    ap Sion, P. E. (Composer) & Ap-Sion, P. E. (Composer), 26 Oct 2005

    Research output: Non-textual form › Composition

50. Published

    Numbers in Colour.

    ap Sion, P. E. (Composer) & Ap-Sion, P. E. (Composer), 1 Jan 2001

    Research output: Non-textual form › Composition