%0 Journal Article %T Summaries of Papers Appearing in this Issue %J Applications of Mathematics %D 1971 %V 16 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.21136/AM.1971.103363/ %R 10.21136/AM.1971.103363 %G en %F 10_21136_AM_1971_103363