TY - JOUR AU - Šidák, Zbyněk TI - Announcement JO - Applications of Mathematics PY - 1991 VL - 36 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.21136/AM.1991.104438/ DO - 10.21136/AM.1991.104438 LA - en ID - 10_21136_AM_1991_104438 ER -