The enigmatic photon, c1994- : t.p. (Sisir Roy, Physics and Applied Math. Unit, Indian Stat. Inst., Calcutta, India)

Extended electromagnetic theory, c1998: t.p. (S. Roy, The Indian Statistical Inst.) p. vi (Sisir Roy)

Webpage for the book, Understanding Space, Time and Causality, viewed 23 December 2019: (Sisir Roy is Visiting Professor and Senior Homi Bhabha Fellow at the National Institute of Advanced Studies, Bengaluru, India. A theoretical physicist, he...) https://www.routledge.com/Understanding-Space-Time-and-Causality-Modern-Physics-and-Ancient-Indian/Sreekantan-Roy/p/book/9780367198701