A generalization of metric tensor and its application
Annales de l'I.H.P. Physique théorique, Volume 13 (1970) no. 4, p. 287-293
@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},
     publisher = {Gauthier-Villars},
     volume = {13},
     number = {4},
     year = {1970},
     pages = {287-293},
     mrnumber = {275838},
     language = {en},
     url = {http://www.numdam.org/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, Volume 13 (1970) no. 4, pp. 287-293. http://www.numdam.org/item/AIHPA_1970__13_4_287_0/

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