@article{RM_1973_28_2_a7,
     author = {P. S. Aleksandrov and N. V. Efimov and V. A. Zalgaller and A. V. Pogorelov},
     title = {Aleksandr {Danilovich} {Aleksandrov} (on his sixtieth birthday)},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {225--230},
     publisher = {mathdoc},
     volume = {28},
     number = {2},
     year = {1973},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_1973_28_2_a7/}
}