TY - JOUR TI - Recenze JO - Applications of Mathematics PY - 1975 SP - 457 EP - 460 VL - 20 IS - 6 UR - http://geodesic.mathdoc.fr/articles/10.21136/AM.1975.103613/ DO - 10.21136/AM.1975.103613 LA - cs ID - 10_21136_AM_1975_103613 ER -