%0 Journal Article %T Summaries of Papers Appearing in this Issue %J Applications of Mathematics %D 1981 %V 26 %N 4 %I mathdoc %U https://geodesic-test.mathdoc.fr/articles/10.21136/AM.1981.103915/ %R 10.21136/AM.1981.103915 %G en %F 10_21136_AM_1981_103915