Grünwedel, Albert and Burgess, James 1999, Buddhist Art in India, trans. Agnes C Gibson, Asian Educational Services, New Delhi
Koltypin, A V 2009, Nagas: Multiheaded Dragons-People from Indian Legends http://www.earthbeforeflood.com/nagas.html
Lau, Constantine W, Ancient Chinese Apiculture http://labs.biology.ucsd.edu/nieh/papers/Lau2012.pdf
Thanks to the following experts who were kind enough to answer my queries:
Dr Jacqui Mulville, Cardiff University re ancient cremation
Dr Sabine Peronne, Museum Victoria re insects
Bernadette Kelly re injuries from horses