%0 Journal Article %T The 20th International Seminar on Stability Problems for Stochastic Models, Lublin–Naleczow, Poland, September 5–11, 1999 %J Teoriâ veroâtnostej i ee primeneniâ %D 1998 %P 825 %V 43 %N 4 %U http://geodesic.mathdoc.fr/item/TVP_1998_43_4_a19/ %G ru %F TVP_1998_43_4_a19