%0 Journal Article %T Summaries of Papers Appearing in this Issue %J Applications of Mathematics %D 1980 %V 25 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.21136/AM.1980.103857/ %R 10.21136/AM.1980.103857 %G en %F 10_21136_AM_1980_103857