@article{DAN_1969_185_6_a4,
     author = {R. A. Zaidman and U. V. Linnik and J. V. Romanovsky},
     title = {Sequential estimation schemes and {Markov} stopping times},
     journal = {Doklady Akademii Nauk},
     pages = {1222--1225},
     publisher = {mathdoc},
     volume = {185},
     number = {6},
     year = {1969},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1969_185_6_a4/}
}