Rothman KJ. BMI-related errors in the measurement of obesity. Int J Obes. 2008 Aug 1;32 Suppl 3:S56-9.
Phanikumar CV, Maitra B. Valuing urban bus attributes: an experience in Kolkata. J Public Transport. 2006;9(2):69-87. doi: 10.5038/2375-0901.9.2.4
Phani Kumar CV, Basu D, Maitra B. Modeling generalized cost of travel for rural bus users: a case study. J Public Transport. 2004;7(2):59-72. doi: 10.5038/2375-0901.7.2.4
Sorensen HT, Sabroe S, Gillman M, Rothman KJ, Madsen KM, Fischer P. Continued increase in prevalence of obesity in young Danish men. Int J Obes. 1997 Aug;21(8):712-4.