%0 Journal Article %T Summaries of Papers Appearing in this Issue %J Applications of Mathematics %D 1973 %P 212 %V 18 %N 3 %U http://geodesic.mathdoc.fr/articles/10.21136/AM.1973.103472/ %R 10.21136/AM.1973.103472 %G en %F 10_21136_AM_1973_103472