TY - JOUR TI - Recense JO - Applications of Mathematics PY - 1970 SP - 221 EP - 225 VL - 15 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.21136/AM.1970.103288/ DO - 10.21136/AM.1970.103288 LA - cz ID - 10_21136_AM_1970_103288 ER -