@article{VNGU_2017_17_4_a1,
     author = {I. S. Borisov and E. I. Shefer},
     title = {The asymptotic behavior of the mean sojourn time for a random walk to be above a receding curvilinear boundary},
     journal = {Sibirskij \v{z}urnal \v{c}istoj i prikladnoj matematiki},
     pages = {18--27},
     year = {2017},
     volume = {17},
     number = {4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VNGU_2017_17_4_a1/}
}