@article{DAN_1972_202_3_a6,
     author = {V. A. Malyshev},
     title = {Classification of two-dimensional positive random walks and almost linear semimartingales},
     journal = {Doklady Akademii Nauk},
     pages = {526--528},
     publisher = {mathdoc},
     volume = {202},
     number = {3},
     year = {1972},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1972_202_3_a6/}
}