Volume V of Brill's Encyclopedia of Hinduism covers religious symbols ranging from gemstones and mudras to sacred threads and vihanas. A section devoted to diaspora communities offers an up-to-date overview of main centers of Hinduism outside of South Asia, The topic of modern Hindu religious movements and teachers is examined in the comprehensive last section, with articles on the Art of Living Foundation, ISKCON, and the Theosophical Society as well as Gandhi, Vivekananda, and Anandamayi Ma, among many others.
George Pati. "Narayana Guru." In Brill’s Encyclopedia of Hinduism: Symbolism, Diaspora, Modern Issues. Ed. Knut A. Jacobsen. Volume 5. Leiden: E. J. Brill. 2013, pp. 559-65.