2017 - 2020 Development of Psychosomatic Theories and Mantra Theories in Indian Esoteric Buddhism: A Philological Study of Sanskrit Manuscripts of the Abhidhānottaratantra
2012 - 2017 Development of Esoteric Buddhism in South Asia: Philological Study of Sanskrit Manuscripts of the Vajradakatantra
2008 - 2010 A Latest Form of Indian Esoteric Buddhism Taught in the Dakarnavatantra.
2008 - 2010 Buddhist logic and the development of late Mahayana Buddhism
1998 - 2000 インド密教思想史
Sugiki, Tsunehiko. The Structure and Meanings of the Heruka Maṇḍala in the Buddhist Ḍākārṇava Scriptural Tradition. Proceedings of the 17th World Sanskrit Conference (Vancouver, 2018). 2020. 1-25
Tsunehiko Sugiki. An Aspect of Indian Buddhist Views of Capital Punishment and Severe Physical Punishment. Journal of Indian and Buddhist Studies. 2020. 68. 3. 63-69
Tsunehiko Sugiki. Selecting Letters to Make the Fundamental Mantra of Heruka: A Critical Edition and Translation of the Sanskrit Abhidhānottaratantra, Chapters 57 and 58. WIAS Research Bulletin. 2020. 12. 33-91
SUGIKI TSUNEHIKO. Compassion, Self-Sacrifice, and Karma in Warfare: Buddhist Discourse on Warfare as an Ethical and Soteriological Instruction for Warriors. Religions. 2020. 11. 2. 66(1)-66(22)
SUGIKI TSUNEHIKO. The Earthly Four Jewels in the Form of Maṇḍala Deities - A Critical Sanskrit Edition and a Translation of Kambala’s Sādhananidhi, Chapter 8 -. 智山学報. 2019. 68. 1-64
Roundtable: Southeast Asia Inter-religious Dialogue.
(The 4th Asia Future Conference 2018)
Structure and Meanings of the Heruka Maṇḍala in the Buddhist Ḍākārṇava Scriptural Tradition.
(World Sanskrit Conference 2018 2018)
Rethinking the Buddhist Discources on Politics and Physical Violence.
(Peaceful Development of South Asia 2018)
Maṇḍalas of Mantras in the Cakrasaṃvara Buddhist Literature: Kambala's Sādhananidhi Chapter 8, the Abhidhānottara Chapters 37, 51, 52, and 59, and the Two Sādhanas from the Sādhanamālā.
(1st Zurich International Conference on Indian Literature and Philosophy, "Transgression and Encounters with the Terrible in Buddhist and Śaiva Tantras 2016)
The Formation of Esoteric Buddhism within Mahāyāna Buddhism: An Interpretation of the Subāhuparipṛcchā.
(The XVIIth Congress of the International Association of Buddhist Studies 2014)