TY - JOUR TI - Recense JO - Applications of Mathematics PY - 1961 SP - 241 EP - 243 VL - 6 IS - 3 UR - http://geodesic.mathdoc.fr/articles/10.21136/AM.1961.102755/ DO - 10.21136/AM.1961.102755 LA - cs ID - 10_21136_AM_1961_102755 ER -