@article{RM_1987_42_3_a21,
     author = {N. N. Bogolyubov and G. F. Mandzhabidze and O. A. Oleinik and S. L. Sobolev and B. V. Khvedelidze},
     title = {Il'ya {Nestorovich} {Vekua} (on his eightieth birthday)},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {237--242},
     publisher = {mathdoc},
     volume = {42},
     number = {3},
     year = {1987},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_1987_42_3_a21/}
}