Khanna, A. and Singh, H. 1980. Subathua - a new Dinoflagellate genus and its Palaeoecological significance in the Saubathu Formation, Simla hills. Journal of Palaeosciences. 26, (1-3) (Dec. 1980), 307–313. DOI:https://doi.org/10.54991/jop.1977.1074.