NAVRÁTIL, Marián - ŠTURDÍK, Ernest. Bioactive components in products using immobilized biosystems. In Biologia. Section A. Section B. Section C, Botany. Zoology. Cellular and molecular biology. ISSN 0006-3088. ISSN 1335-6372. ISSN 1335-6380. ISSN 1335-6399, 1999, roč. 54, č. 6, s. 635-648.