Gupta, A. K., Yadav, V. K. and Bhushan, A. (2015) “Recreational Services Valuation of Asiatic Elephants in Developing Countries: A Case Study of Rajaji National Park, India”, Indian Forester, 141(10), pp. 1034–1041. doi: 10.36808/if/2015/v141i10/80628.