TY - JOUR TI - Recense JO - Applications of Mathematics PY - 1971 SP - 155 EP - 162 VL - 16 IS - 2 UR - http://geodesic.mathdoc.fr/articles/10.21136/AM.1971.103338/ DO - 10.21136/AM.1971.103338 LA - cs ID - 10_21136_AM_1971_103338 ER -