%0 Journal Article %A W. ZajÄ…czkowski %A M. Krakowski %T Properties of certain improper integrals %J Applicationes Mathematicae %D 1976 %P 517-522 %V 15 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/am-15-4-517-522/ %R 10.4064/am-15-4-517-522 %G en %F 10_4064_am_15_4_517_522