National collaborations:
TAA: UMI working group on "Approximation Theory and Applications"
CAA: Padova-Verona research group on "Constructive Approximation and Applications"
International contacts and collaborations:
Oleg Davydov (University of Giessen, Germany)
Gregory E. Fasshauer (Colorado School of Mines, Golden, USA)
Kai Hormann (University of Lugano, Switzerland)
Peter Junghanns (Chemnitz University of Technology, Chemnitz, Germany)
Elisabeth Larsson (Uppsala University, Sweden)
Gradimir V. Milovanović (Serbian Academy of Sciences and Arts, Belgrade, Serbia)
József Szabados (Hungarian Academy of Sciences, Budapest, Hungary)
László Szili (Eötvös Loránd University, Budapest, Hungary)
Péter Vértesi (Hungarian Academy of Sciences, Budapest, Hungary)
Holger Wendland (University of Bayreuth, Germany)
Grady B. Wright (Boise State University, USA)