Az Eszterházy Károly Tanárképző Főiskola Tudományos Közleményei. 2004. Sectio Mathematicae. (Acta Academiae Paedagogicae Agriensis : Nova series ; Tom. 31)

KOSTRA, J. and VAVROS, M., On transformation matrices connected to normal bases in rings

On transformation matrices connected to normal bases in rings 17 [3] DivisovÁ, Z., KOSTRA, J., POMP, M., On transformation matrices connected to normal bases in cubic fields, Acta Acad. Paed. Agriensis, Sectio Mathematicae 29 (2002), 61-66. [4] DIVISOVÁ

, Z., KOSTRA, J., POMP, M., On transformation matrix connected to normal bases in orders, JP Jour. Algebra, Number Theory and Appl. 3/1 (2003), 43- 52. [5] KOSTRA, J., Orders with A normal basis, Czechoslovak Math. Journal 35 (1985), 391-404. [(>] KOSTRA, J., Open problems on the relation between additive and multiplicative structure, Annales Mathematicae Silesianae 16 (2003), 21-25. J. Kostra Department of Algebra, Geometry and Didactics University of Zilina Húrban ova 15 Zilina, Slovak Republic E-mail: juraj.kostra@fpv.utc.sk M. Vavros Department of Mathematics University of Ostrava 30. dubna 22 Ostrava, Czech Republic E-mail: michal.vavros@osu.cz