Voir la notice de l'article provenant de la source Numdam
@article{AIHPA_1970__13_4_287_0, author = {Perng, Jeng J.}, title = {A generalization of metric tensor and its application}, journal = {Annales de l'I.H.P. Physique th\'eorique}, pages = {287--293}, publisher = {Gauthier-Villars}, volume = {13}, number = {4}, year = {1970}, mrnumber = {275838}, language = {en}, url = {http://geodesic.mathdoc.fr/item/AIHPA_1970__13_4_287_0/} }
Perng, Jeng J. A generalization of metric tensor and its application. Annales de l'I.H.P. Physique théorique, Tome 13 (1970) no. 4, pp. 287-293. http://geodesic.mathdoc.fr/item/AIHPA_1970__13_4_287_0/