Maitra B, Dandapat S, Chintakayala P. Differences between the perceptions of captive and choice riders toward bus service attributes and the need for segmentation of bus services in urban India. J Urban Plan Dev. 2015 Jun;141(2).
Chintakayala PK, Maitra B. Modeling generalized cost of travel and its application for improvement of taxies in Kolkata. J Urban Plan Dev. 2010 Mar;136(1).
Mirabelli MC, Zock JP, Bircher AJ, Jarvis D, Keidel D, Kromhout H, Norbäck D, Olivieri M, Plana E. Metalworking exposures and persistent skin symptoms in the ECRHS II and SAPALDIA 2 cohorts. Contact Dermatitis. 2009 May;60(5):256-63.