A. Sen

Estimating marginal external costs of transport in Delhi

G. Tiwari, A. Sen, V. Upadhyay, 2010 .

Strategies of state and local government in management of urban transport problems – A case of Delhi

G. Tiwari, A. Sen, V. Upadhyay, 2013 .

Pyometra in a basset bitch

A. Sen, 1976, Veterinary Record.

Should bus commuting be subsidized for providing quality transport services? — A case for Delhi

Geetam Tiwari, V. Upadhyay, G. Tiwari, 2007 .