M. . M.N Ullah, M. . S. Hossaina, M. . Shahiduzamana, M. . S. Islam, M. Z. Islam, and M. . R. Choudhary, “A Study on Some Aspects of Drainage System in Rajshahi City, Bangladesh”, Sci. J. Environ. Sci., vol. 2, no. 6, pp. 118-124, Nov. 2013.