Knut A. Jacobsen. “Many Kapilas and the Kapila Avatāra: Plurality of Traditions and Multiplicity of Interpretations: Journal of Vaishnava Studies”. Journal of Vaishnava Studies, vol. 26, no. 1, June 2022, pp. 155-63, https://ivsjournal.com/index.php/jvs/article/view/397.