@article{VUU_2015_25_4_a7,
     author = {D. A. Tursunov and U. Z. Erkebaev},
     title = {Asymptotics of the {Dirichlet} problem solution for a~bisingular perturbed equation in the ring},
     journal = {Vestnik Udmurtskogo universiteta. Matematika, mehanika, kompʹ\^uternye nauki},
     pages = {517--525},
     publisher = {mathdoc},
     volume = {25},
     number = {4},
     year = {2015},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VUU_2015_25_4_a7/}
}