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).
Hoogeveen EK, Rothman KJ. Hyperhomocysteinemia increases the risk of death in type 2 diabetes. Cardiovasc Rev Rep. 2001;22:207-12.
Rothman KJ. Estimation of confidence limits for the cumulative probability of survival in life-table analysis. J Chronic Dis. 1978 Jan 1;31(8):557-60. doi: 10.1016/0021-9681(78)90043-7
Rothman KJ. A pictorial representation of confounding in epidemiologic studies. J Chronic Dis. 1975 Feb;28(2):101-8.
Rothman KJ, Keller AZ. The effect of joint exposure to alcohol and tobacco on risk of cancer of the mouth and pharynx. J Chronic Dis. 1972 Dec;25(12):711-6.