@misc{AL_2010_49_6_a0,
     title = {Yurii {Leonidovich} {Ershov} (on his 70th birthday)},
     journal = {Algebra i logika},
     pages = {I--V},
     publisher = {mathdoc},
     volume = {49},
     number = {6},
     year = {2010},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AL_2010_49_6_a0/}
}