@article{RM_1965_20_3_a10,
     author = {N. I. Akhiezer and V. A. Marchenko},
     title = {Boris {Moiseevich} {Levitan} (on his fiftieth birthday)},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {175--182},
     publisher = {mathdoc},
     volume = {20},
     number = {3},
     year = {1965},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_1965_20_3_a10/}
}