%0 Journal Article %A Skřivánková, Valéria %T Contributions to the renewal theory of the things in operation [Abstract of thesis] %J Commentationes Mathematicae Universitatis Carolinae %D 1985 %V 26 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMUC_1985__26_4_a18/ %G en %F CMUC_1985__26_4_a18