TY - JOUR TI - Recense JO - Applications of Mathematics PY - 1957 SP - 227 EP - 230 VL - 02 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.21136/AM.1957.102570/ DO - 10.21136/AM.1957.102570 LA - cz ID - 10_21136_AM_1957_102570 ER -