@article{UZMU_1952_163_163_a2,
     author = {L. \`E. \`El'sgol'ts},
     title = {Genaue {Absch\"atzung} der {Anzahl} der geometrisch und analytisch verschiedenen kritischen {Punkte}},
     journal = {Uchenye Zapiski Moskovskogo Gosudarstvennogo Universiteta},
     pages = {61--68},
     publisher = {mathdoc},
     volume = {163},
     number = {163},
     year = {1952},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/UZMU_1952_163_163_a2/}
}