@article{RM_1993_48_2_a0,
     author = {O. V. Manturov},
     title = {Nikolai {Ivanovich} {Lobachevskii} (on the bicentenary of his birth)},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {1--13},
     publisher = {mathdoc},
     volume = {48},
     number = {2},
     year = {1993},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_1993_48_2_a0/}
}