TY - JOUR TI - Recense JO - Applications of Mathematics PY - 1975 SP - 63 EP - 66 VL - 20 IS - 1 UR - http://geodesic.mathdoc.fr/articles/10.21136/AM.1975.103566/ DO - 10.21136/AM.1975.103566 LA - cs ID - 10_21136_AM_1975_103566 ER -