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• Volume 15

Author: Bican, Ladislav

• Bican, Ladislav; Jambor, Pavel; Kepka, Tomáš; Němec, Petr: Composition of preradicals. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 15 (1974), issue 3, pp. 393-405
• Bican, Ladislav; Jambor, Pavel; Kepka, Tomáš; Němec, Petr: Preradicals. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 15 (1974), issue 1, pp. 75-83