@article{DE_1982_18_4_a29,
     author = {N. P. Erugin and N. A. Izobov and I. T. Kiguradze and L. D. Kudryavtsev and V. P. Maksimov},
     title = {Nikolaǐ {Viktorovich} {Azbelev} (on the occasion of his sixtieth birthday)},
     journal = {Differencialʹnye uravneni\^a},
     pages = {725--730},
     year = {1982},
     volume = {18},
     number = {4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1982_18_4_a29/}
}