@article{DM_2015_27_1_a9,
     author = {Valentin A. Topchiy},
     title = {Two-dimensional renewal theorems with weak moment conditions and critical {Bellman\,--\,Harris} branching processes},
     journal = {Diskretnaya Matematika},
     pages = {123--145},
     publisher = {mathdoc},
     volume = {27},
     number = {1},
     year = {2015},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DM_2015_27_1_a9/}
}