%0 Journal Article %T Recense %J Applications of Mathematics %D 1978 %P 472-476 %V 23 %N 6 %I mathdoc %U https://geodesic-test.mathdoc.fr/articles/10.21136/AM.1978.103773/ %R 10.21136/AM.1978.103773 %G cz %F 10_21136_AM_1978_103773