The Upanishads quoted by Sri SrikanThacharya (11 -12/13th Century CE) in his Vedantasutra Bhasya,
1. Isha Upanishad
2. Kena Upanishad
3. Katha Upanishad
4. Aitareya Upanishad
5. Taittiriya Upanishad
6. Mundaka Upanishad
7. Mandukya Upanishad
8. Prasna Upanishad
9. Bruhadaranyaka Upanishad
10. Chandogya Upanishad
11. Shvetashvatara Upanishad
12. Atharvasira Upanishad
13. Atharvasika Upanishad
14. Kaivalya Upanishad
15. Jabala Upanishad
16. Kalagnirutra Upanishad
17. Shivasankalpa Upanishad
18. Maithrayani Upanishad
19. Kaushitaki Upanishad