@article{1214434343, author = {Chen, Bang-yen and Yano, Kentaro}, title = {On the theory of normal variations}, journal = {J. Differential Geom.}, volume = {13}, number = {1}, year = {1978}, pages = { 1-10}, language = {en}, url = {http://dml.mathdoc.fr/item/1214434343} }
Chen, Bang-yen; Yano, Kentaro. On the theory of normal variations. J. Differential Geom., Tome 13 (1978) no. 1, pp. 1-10. http://gdmltest.u-ga.fr/item/1214434343/