@article{IVM_1978_7_a1,
     author = {O. S. Germanov and N. M. Pisareva and E. I. Yakovlev},
     title = {The first integral of geodesic lines and symmetry groups},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {5--12},
     year = {1978},
     number = {7},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1978_7_a1/}
}