@article{AA_2002_14_5_a4,
     author = {N. D. Lebedeva},
     title = {Return theorem in systems with branching geodesics},
     journal = {Algebra i analiz},
     pages = {87--95},
     publisher = {mathdoc},
     volume = {14},
     number = {5},
     year = {2002},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AA_2002_14_5_a4/}
}