%0 Journal Article %T Summaries of Papers Appearing in this Issue %J Applications of Mathematics %D 1975 %V 20 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.21136/AM.1975.103614/ %R 10.21136/AM.1975.103614 %G en %F 10_21136_AM_1975_103614