TY - JOUR TI - Recense JO - Applications of Mathematics PY - 1969 SP - 516 VL - 14 IS - 6 UR - http://geodesic.mathdoc.fr/articles/10.21136/AM.1969.103257/ DO - 10.21136/AM.1969.103257 LA - cs ID - 10_21136_AM_1969_103257 ER -