%0 Journal Article %T Recense %J Applications of Mathematics %D 1972 %P 309-319 %V 17 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.21136/AM.1972.103420/ %R 10.21136/AM.1972.103420 %G cz %F 10_21136_AM_1972_103420