@article{RM_1987_42_4_a14,
     author = {I. M. Gel'fand and M. G. Krein and V. A. Marchenko and N. K. Nikol'skii and I. V. Ostrovskii},
     title = {Boris {Yakovlevich} {Levin} (on~his eightieth birthday)},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {175--178},
     publisher = {mathdoc},
     volume = {42},
     number = {4},
     year = {1987},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_1987_42_4_a14/}
}