%0 Journal Article %A M. Asgharian %T On the singularities of the information matrix and multipath changepoint problems %J Teoriâ veroâtnostej i ee primeneniâ %D 2013 %P 711-729 %V 58 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/TVP_2013_58_4_a4/ %G en %F TVP_2013_58_4_a4