TY - JOUR TI - Recense JO - Applications of Mathematics PY - 1972 SP - 309 EP - 319 VL - 17 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.21136/AM.1972.103420/ DO - 10.21136/AM.1972.103420 LA - cz ID - 10_21136_AM_1972_103420 ER -