%0 Journal Article %T Recense %J Applications of Mathematics %D 1978 %P 150-159 %V 23 %N 2 %U http://geodesic.mathdoc.fr/articles/10.21136/AM.1978.103738/ %R 10.21136/AM.1978.103738 %G cs %F 10_21136_AM_1978_103738