@article{1077311633, author = {Lees, J. Alexander}, title = {On the classification of Lagrange immersions}, journal = {Duke Math. J.}, volume = {43}, number = {1}, year = {1976}, pages = { 217-224}, language = {en}, url = {http://dml.mathdoc.fr/item/1077311633} }
Lees, J. Alexander. On the classification of Lagrange immersions. Duke Math. J., Tome 43 (1976) no. 1, pp. 217-224. http://gdmltest.u-ga.fr/item/1077311633/