On ( k , f , l ) -chordal polygons. Pogány, T.K.; Radić, M. — 2000 Balkan Journal of Geometry and its Applications (BJGA)
On equations and properties concerning some classes of chordal polygons. Radić, M.; Pogány, T.K.; Kadum, V. — 2003 Balkan Journal of Geometry and its Applications (BJGA)
On the bounded cosine operator function in Banach space M. V. Radić; F. Vajzović — 1987 Matematički Vesnik