@article{IM2_2015_79_3_a1,
     author = {V. I. Lotov and A. S. Tarasenko},
     title = {On the asymptotics of the mean sojourn time of a~random walk on a~semi-axis},
     journal = {Izvestiya. Mathematics},
     pages = {449--466},
     year = {2015},
     volume = {79},
     number = {3},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_2015_79_3_a1/}
}