Chakrabartty, Aparajita, and Sudakshina Gupta. “Technical Efficiency of Urban Public Transport Undertakings in India: A Study With Special Reference to CSTC”. Arthshastra Indian Journal of Economics & Research, vol. 4, no. 3, June 2015, pp. 20-32, doi:10.17010/aijer/2015/v4i3/71377.