@article{ZNSL_1978_75_a8,
     author = {E. V. Dybkova},
     title = {The index of a~net subgroup of a~symplectic group over {a~Dedekind} ring},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {74--86},
     publisher = {mathdoc},
     volume = {75},
     year = {1978},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1978_75_a8/}
}