%0 Journal Article %T Recense %J Applications of Mathematics %D 1968 %P 508-510 %V 13 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.21136/AM.1968.103199/ %R 10.21136/AM.1968.103199 %G cz %F 10_21136_AM_1968_103199