@article{VMUMM_1986_5_a0,
     author = {O. B. Lupanov and \`E. G. Poznyak and \`E. R. Rozendorn and I. Kh. Sabitov and V. A. Sadovnichii},
     title = {In memory of {Nikolai} {Vladimirovich} {Efimov} (1910--1982)},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {3--4},
     publisher = {mathdoc},
     number = {5},
     year = {1986},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_1986_5_a0/}
}