TY - JOUR TI - Recense JO - Applications of Mathematics PY - 1961 SP - 470 EP - 471 VL - 6 IS - 6 UR - http://geodesic.mathdoc.fr/articles/10.21136/AM.1961.102779/ DO - 10.21136/AM.1961.102779 LA - cs ID - 10_21136_AM_1961_102779 ER -