@article{DAN_1964_156_2_a3,
     author = {G. I. Kalmykov},
     title = {On the reversibility of {Feller} processes},
     journal = {Doklady Akademii Nauk},
     pages = {251--254},
     publisher = {mathdoc},
     volume = {156},
     number = {2},
     year = {1964},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1964_156_2_a3/}
}