TY - JOUR TI - Recense JO - Applications of Mathematics PY - 1975 SP - 143 EP - 148 VL - 20 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.21136/AM.1975.103576/ DO - 10.21136/AM.1975.103576 LA - cz ID - 10_21136_AM_1975_103576 ER -