@article{DE_1997_33_4_a0,
     author = {N. A. Izobov and V. A. Il'in and I. T. Kiguradze and L. D. Kudryavtsev and V. P. Maksimov and T. K. Shemjakina},
     title = {Nikola{\v\i} {Viktorovich} {Azbelev} (on the occasion of his seventy-fifth birthday)},
     journal = {Differencialʹnye uravneni\^a},
     pages = {435--439},
     publisher = {mathdoc},
     volume = {33},
     number = {4},
     year = {1997},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1997_33_4_a0/}
}