@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/