%0 Journal Article %T Summaries of Papers Appearing in this Issue %J Applications of Mathematics %D 1980 %V 25 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.21136/AM.1980.103866/ %R 10.21136/AM.1980.103866 %G en %F 10_21136_AM_1980_103866