@article{ISU_2013_13_3_a16,
     author = {L. Yu. Kossovich and Yu. N. Radaev},
     title = {To 60-th anniversary of professor {A.\,O.~Vatulyan}},
     journal = {Izvestiya of Saratov University. Mathematics. Mechanics. Informatics},
     pages = {111--118},
     publisher = {mathdoc},
     volume = {13},
     number = {3},
     year = {2013},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ISU_2013_13_3_a16/}
}