• Raúl Ibáñez

    Universidad del Pais Vasco, Bilbao, Spain
  • Alexy Tralle

    University of Warmia and Mazury in Olsztyn, Poland
  • Yuli Rudyak

    University of Siegen, Germany
  • Luis Ugarte

    Universidad de Zaragoza, Spain

Cite this article

Raúl Ibáñez, Alexy Tralle, Yuli Rudyak, Luis Ugarte, Erratum. Comment. Math. Helv. 76 (2001), no. 3, p. 576

DOI 10.1007/PL00000386