@article{ZNSL_1987_165_a0,
     author = {V. D. Azhotkin},
     title = {On the term of normal curvature in pseudofinsler geometry},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {5--8},
     year = {1987},
     volume = {165},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1987_165_a0/}
}