@article{RM_1978_33_3_a33,
     author = {A. P. Yushkevich},
     title = {N.\,I.~Lobachevskii. {Scientific} and pedagogic legacy. {Guidance} of the {Kazan'} {University.} {Fragments.} {Letters} (a~review)},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     publisher = {mathdoc},
     volume = {33},
     number = {3},
     year = {1978},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/RM_1978_33_3_a33/}
}