Claude Cibils - Univ Montpellier, CNRS, Inst Montpellierain Alexander Grothendieck IMAG, Montpellier, France
Marcelo Lanzilotta - Univ Republica, Inst Matemat & Estadist Rafael Laguardia, Montevideo, Uruguay
Eduardo N. Marcos - Universidade de São Paulo
Andrea Solotar - Univ Buenos Aires, Dept Matemat, Buenos Aires, DF, Argentina