Agrawal, S, 2009. Angiosperm species diversity and ecological assessment of Hastinapur wildlife sanctuary, India. PhD. Thesis, department of Botany, AMU, Aligarh, India.
Anoop, K.R., 2001. Factors affecting habitat selection and feeding habits of smooth coated Otter Lutraperspicillata in Periyar Tiger reserve, Kerala. M.Sc. dissertation, Saurashtra University, Rajakot, India.