TY - JOUR TI - Recense JO - Applications of Mathematics PY - 1959 SP - 156 EP - 161 VL - 4 IS - 2 UR - http://geodesic.mathdoc.fr/articles/10.21136/AM.1959.102657/ DO - 10.21136/AM.1959.102657 LA - cs ID - 10_21136_AM_1959_102657 ER -