Mesiar Radko, Kalina M., Marková Andrea, Nánásiová O., Haluška J. :  Proceedings of the Fuzzy Sets, Quantum Structures and Related Topics and Mathematics and Music, STU, (Bratislava 1997) , International Seminars of the Fuzzy Sets, Quantum Structures and Related Topics and Mathematics and Music, (Kočovce, SK, 18.04.1997-20.04.1997) [1997]