TY - JOUR TI - Recenze JO - Applications of Mathematics PY - 1987 SP - 254 EP - 256 VL - 32 IS - 3 UR - http://geodesic.mathdoc.fr/articles/10.21136/AM.1987.104255/ DO - 10.21136/AM.1987.104255 LA - cs ID - 10_21136_AM_1987_104255 ER -