@article{ZNSL_1985_144_a10,
     author = {G. V. Kuz'mina},
     title = {The module problem for families of classes of curves in a circular ring},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {115--127},
     publisher = {mathdoc},
     volume = {144},
     year = {1985},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1985_144_a10/}
}