%0 Journal Article %A Z. GodziƄski %A L. Stasierski %T Ground-wave perturbation over a transition zone between two different section %J Applicationes Mathematicae %D 1972 %P 231-253 %V 13 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/am-13-2-231-253/ %R 10.4064/am-13-2-231-253 %G en %F 10_4064_am_13_2_231_253