@article{1195513990, author = {Hotta, K\^osaku}, title = {On the relative $CR$ structure}, journal = {Proc. Japan Acad. Ser. A Math. Sci.}, volume = {63}, number = {9}, year = {1987}, pages = { 42-45}, language = {en}, url = {http://dml.mathdoc.fr/item/1195513990} }
Hotta, Kôsaku. On the relative $CR$ structure. Proc. Japan Acad. Ser. A Math. Sci., Tome 63 (1987) no. 9, pp. 42-45. http://gdmltest.u-ga.fr/item/1195513990/