Kalita, J. P., M. K. Saikia, A. Sharma, B. Saikia, and G. C. Das. “Single Atrium - a Rare Case Report”. International Journal of Research in Medical Sciences, vol. 4, no. 7, Jan. 2017, pp. 3074-6, doi:10.18203/2320-6012.ijrms20162011.