TY - JOUR AU - Michálek, Jiří TI - Associated spectra of some non-stationary processes JO - Kybernetika PY - 1988 SP - 428 EP - 438 VL - 24 IS - 6 UR - http://geodesic.mathdoc.fr/item/KYB_1988_24_6_a2/ LA - en ID - KYB_1988_24_6_a2 ER -