@article{ZNSL_1989_175_a13,
     author = {V. M. Tsvetkov},
     title = {On the resolvention of {Klein}},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {128--134},
     publisher = {mathdoc},
     volume = {175},
     year = {1989},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1989_175_a13/}
}