@article{INTG_1973_4_a0,
     author = {N. M. Ostianu and V. V. Ryzhkov and P. I. Shveikin},
     title = {Essay on the scientific investigations of {German} {Fedorovich} {Laptev}},
     journal = {Itogi Nauki i Tekhniki. Seriya Problemy Geometrii. Trudy Geometricheskogo Seminara},
     pages = {7--70},
     publisher = {mathdoc},
     volume = {4},
     year = {1973},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/INTG_1973_4_a0/}
}