Type | List | Author: Title, Series, Vol/No (Year/Month/Date of Publication), Pages | Status | | 1. | Valavanis, Tassos: Gloria in Excelsis Deo. Alpha 56 (25 Dec- 6 Jan 1967), 20-21. [A literary and musical analysis of J.S. Bach's Christmas oratorio] [BWV 248] - published in Greece. | |
| 2. | Valavanis, Tassos: Oratorio kai kantata: Parall¯ela me italik¯e opera. NewPerspectives 18/1 (1995), 8. [Oratorio and cantata: Parallelism with Italian opera] - published in Greece. | |
| 3. | Valavanis, Tassos: Kantata kai oratorio: Paràll¯ila me t¯in opera. SocialMonitor 13421 (Nov 1999), 4-5. [Cantata and oratorio: Parallel to the invention of Italian opera] - published in USA. | |