@article{RM_1961_16_4_a5,
     author = {A. V. Bitsadze and A. I. Markushevich and B. V. Shabat},
     title = {Mikhail {Alekseevich} {Lavrent'ev} (on his sixtieth birthday)},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {143--153},
     publisher = {mathdoc},
     volume = {16},
     number = {4},
     year = {1961},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_1961_16_4_a5/}
}