RT Journal Article SR Electronic A1 Fořt, Bohumil T1 JF Bohemica Olomucensia YR 2021 VO 13 IS 1 SP 200 OP 212 DO 10.5507/bo.2021.010 UL https://bohemica.upol.cz/cz/artkey/boh-202101-0010.php AB