@article{RM_1967_22_2_a3,
     author = {P. S. Aleksandrov and V. A. Il'in},
     title = {Andrei {Nikolaevich} {Tikhonov} (on his sixtieth birthday)},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {109--110},
     publisher = {mathdoc},
     volume = {22},
     number = {2},
     year = {1967},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_1967_22_2_a3/}
}