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Törzsök, Judit (2020). "Why Are the Skull-Bearers (Kāpālikas) Called Soma?". In Goodall, Dominic; Hatley, Shaman; Isaacson, Harunaga; Raman, Srilata (eds.). Śaivism and the Tantric Traditions: Essays in Honour of Alexis G.J.S. Sanderson. Gonda Indological Studies. Vol. 22. Leiden and Boston: Brill Publishers. pp. 33–46. doi:10.1163/9789004432802_004. ISBN978-90-04-43280-2. ISSN1382-3442.