Khanna, A., and H. Singh. “Subathua - a New Dinoflagellate Genus and Its Palaeoecological Significance in the Saubathu Formation, Simla Hills”. Journal of Palaeosciences, vol. 26, no. (1-3), Dec. 1980, pp. 307-13, doi:10.54991/jop.1977.1074.