| 1. | SEPELAK Vladimir: Mechanically Induced Structural Disorder in Spinel Ferrite. In: Zbornik z III. odborneho seminara: Partikularne latky vo vede, priemysle a zivotnom prostredi, 6.12.2000 Kosice. (ed. Stevulova N., Plesingerova B.) Ugt SAV-KE, HF TU-Kosice, Slov. chemicka spol., 2000, s. 51-55. (ISBN 80-7099-621-8) |
| 2. | STYRIAKOVA Iveta: The quality improvement of kaolins by bacterial leaching. In: Proc. 5th Conference on Environment and Mineral Processing, Ostrava 22. 6. - 24. 6. 2000, part I, p. 447-454 |