%0 Journal Article %A A. A. Butov %T Some random environments statistical problems for observable birth-and-death processes %J Informatics and Automation %D 1993 %P 25-32 %V 202 %I mathdoc %U http://geodesic.mathdoc.fr/item/TRSPY_1993_202_a3/ %G ru %F TRSPY_1993_202_a3