%0 Journal Article %T Summaries of Papers Appearing in this Issue %J Applications of Mathematics %D 1980 %P 161 %V 25 %N 3 %U http://geodesic.mathdoc.fr/articles/10.21136/AM.1980.103848/ %R 10.21136/AM.1980.103848 %G en %F 10_21136_AM_1980_103848