TY - JOUR TI - Book Reviews JO - Applications of Mathematics PY - 1967 SP - 72 EP - 78 VL - 12 IS - 1 UR - http://geodesic.mathdoc.fr/articles/10.21136/AM.1967.103068/ DO - 10.21136/AM.1967.103068 LA - cs ID - 10_21136_AM_1967_103068 ER -