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@article{PIM_1967_N_S_07_21_a5, author = {K. C. Ray}, title = {On measurable sets under certain transformation}, journal = {Publications de l'Institut Math\'ematique}, pages = {55 }, publisher = {mathdoc}, volume = {_N_S_07}, number = {21}, year = {1967}, url = {http://geodesic.mathdoc.fr/item/PIM_1967_N_S_07_21_a5/} }
K. C. Ray. On measurable sets under certain transformation. Publications de l'Institut Mathématique, _N_S_07 (1967) no. 21, p. 55 . http://geodesic.mathdoc.fr/item/PIM_1967_N_S_07_21_a5/