@article{RM_2007_62_4_a4,
     author = {S. I. Adian and O. V. Besov and A. A. Gonchar and M. I. Dyachenko and B. S. Kashin and S. M. Nikol'skii and M. K. Potapov},
     title = {Petr {Lavrent'evich} {Ul'yanov} (obituary)},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {767--773},
     publisher = {mathdoc},
     volume = {62},
     number = {4},
     year = {2007},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_2007_62_4_a4/}
}