@article{DAN_1967_172_2_a1,
     author = {E. B. Dynkin},
     title = {General boundary conditions for {Markov} processes with a countable set of states},
     journal = {Doklady Akademii Nauk},
     pages = {258--261},
     publisher = {mathdoc},
     volume = {172},
     number = {2},
     year = {1967},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1967_172_2_a1/}
}