TY - JOUR TI - Recense JO - Applications of Mathematics PY - 1957 SP - 160 EP - 162 VL - 2 IS - 2 UR - http://geodesic.mathdoc.fr/articles/10.21136/AM.1957.102563/ DO - 10.21136/AM.1957.102563 LA - cs ID - 10_21136_AM_1957_102563 ER -