Mustonen, Vesa (ed.) et al., Function spaces, differential operators and nonlinear analysis. Proceedings of the conference, FSDONA-99, Syöte, Finland, June 10-16, 1999. Prague: Mathematical Institute of the Academy of Sciences of the Czech Republic. 170-186 (2000).
Hudzik, Henryk (ed.) et al., Function spaces. Proceedings of the 5th international conference, Poznań, Poland, August 28-September 3, 1998. New York, NY: Marcel Dekker. Lect. Notes Pure Appl. Math. 213, 323-336 (2000).
Rákosník, Jiří(ed.), Function spaces, differential operators and nonlinear analysis. Proceedings of the conference held in Paseky nad Jizerou, Czech Republic, September 3-9, 1995. Prague: Prometheus Publishing House. 101-112 (1996).