Duckworth, Douglas. "On the Concepts of Presence and Absence as a Means for Understanding Buddha-Nature." Interview by Alex Gardner. AAR Annual Meeting, Denver, CO, Nov. 20, 2018. Video, 7:40. https://www.youtube.com/watch?v=7f_Yf9U1SF8&t=3s. +
Ruegg, David Seyfort. "On the Dge lugs-pa Theory of the Tathāgatagarbha." In ''Pratidanam: Indian, Iranian and Indo-European Studies Presented to Franciscus Bernardus Jacobus Kuiper on His Sixtieth Birthday'', edited by J. C. Heesterman, G. H. Schokker, and V. I. Subramoniam, 500–509. The Hague: Mouton, 1968. +
Duckworth, Douglas. "On the Dialectical Relationship between Presence and Absence in Discussions on Buddha-Nature." Interview by Alex Gardner. AAR Annual Meeting, Denver, CO, Nov. 20, 2018. Video, 11:07. https://www.youtube.com/watch?v=QCDDayidTRI. +
Hodge, Stephen. "On the Eschatology of the Mahāparinirvāṇa Sūtra and Related Matters." Lecture delivered on the Tibetan version of the Mahāparinirvāṇa Sūtra at the University of London, SOAS, Spring 2006. http://www.shabkar.org/download/pdf/On_the_Eschatology_of_the_Mahaparinirvana_Sutra_and_Related_Matters.pdf +
Brunnhölzl, Karl. “On the Future of Buddha-Nature Studies.” Interview by Marcus Perman. Tsadra Foundation Research Department, December 3, 2018. Video, 1:33. https://youtu.be/ex_6hi_58YY. +
Hubbard, Jamie, and Paul Swanson. "On the Issue of Buddha-Nature and Practice in East Asian Buddhist Traditions." Interview by Marcus Perman, Alex Gardner, and José Cabezón. AAR Annual Meeting, Denver, CO, Nov. 2018. Video, 3:49. https://www.youtube.com/watch?v=BrBsxf0vk7o. +
Ringu Tulku. “On the Meaning of Chapter 1 Verse 28 of the Ratnagotravibhāga.” Interview by Marcus Perman. Tsadra Foundation Research Department, October 10, 2019. Video, 13:26. https://youtu.be/pkd9S_V6Dlk. +
Ringu Tulku. “On the Nature of Mind and Its Relationship to Buddha-Nature.” Interview by Marcus Perman. Tsadra Foundation Research Department, October 10, 2019. Video, 7:46. https://youtu.be/0NKhxlJCelo. +
Thero, Ven. Dhammadipa. "On the Nature of Mind in Yogachara." Interview by Marcus Perman. Salon Tibétain, Tsadra Foundation, Boulder, CO, Jan 30, 2019. Video, 10:17. https://www.youtube.com/watch?v=1Z5CKnHRJ9E. +
Brunnhölzl, Karl. “On the Origins and Authorship of the Uttaratantrashastra.” Interview by Marcus Perman. Tsadra Foundation Research Department, December 3, 2018. Video, 4:31. https://youtu.be/uzRwoCR-85Y. +
Schmithausen, Lambert. "On the Problem of the Relation of Spiritual Practice and Philosophical Theory in Buddhism." In Vol. 2, ''German Scholars on India: Contributions to Indian Studies'', edited by the Cultural Department of the Embassy of the Federal Republic of Germany, New Delhi, 235–50. Bombay: Nachiketa Publications, 1976. +
Gardner, Alex. "On the ''Ratnagotravibhāga''." ''Buddha-Nature: A Tsadra Foundation Initiative'', September 12, 2018. https://buddhanature.tsadra.org/index.php/Articles/On_the_Ratnagotravibh%C4%81ga. +
Ringu Tulku. “On the Relationship between a Sentient Being and a Buddha” Interview by Marcus Perman. Tsadra Foundation Research Department, October 10, 2019. Video, 5:07. https://youtu.be/6rTj6lLcUR0. +
Foulk, T. Griffith, and Robert H. Sharf. ‘‘On the Ritual Use of Ch’an Portraiture in Medieval China.’’ (In French.) ''Cahiers d’Extrême-Asie'' 7 (1993–1994): 149–219. https://www.persee.fr/doc/asie_0766-1177_1993_num_7_1_1064. +
Thero, Ven. Dhammadipa. "On the Roots of Tathāgatagarbha and His Position on the Concept." Interview by Marcus Perman. Salon Tibétain, Tsadra Foundation, Boulder, CO, Jan 30, 2019. Video, 7:35. https://www.youtube.com/watch?v=TvQ4W0U7JY8. +
Callahan, Elizabeth. “On the Term Ordinary Mind.” Interview by Marcus Perman. Tsadra Foundation Research Department, November 9, 2019. Video, 2:16. https://youtu.be/qx1NAke8aV0 +
Callahan, Elizabeth. “On the Terminology Associated with Buddha-Nature.” Interview by Marcus Perman. Tsadra Foundation Research Department, November 9, 2019. Video, 8:29. https://youtu.be/ValneCRetjc. +
Tokpa Tulku. “On the Three Reasons That All Beings Have Buddha-Nature.” Interview by Marcus Perman. Tsadra Foundation Research Department, April 22, 2019. Video, 6:29. https://youtu.be/yx60OVqkuxc. +
Duckworth, Douglas. "On the Topic of Buddha-Nature Understood as Luminosity (or as Having Qualities) versus Buddha-Nature Understood as Emptiness." Interview by Alex Gardner. AAR Annual Meeting, Denver, CO, Nov. 20, 2018. Video, 7:24. https://www.youtube.com/watch?v=ezum9pXNl44. +
Ringu Tulku. “On the Uttaratantrashastra as a Bridge between Sutra and Tantra” Interview by Marcus Perman. Tsadra Foundation Research Department, October 10, 2019. Video, 2:10. https://youtu.be/lNUpq1Rq2n0. +