- Javier Gutiérrez García,
- Iraide Mardones-Pérez,
- Imanol Mozo Carollo,
- María Angeles de Prada Vicente.
Departament of Mathematics,
University of the Basque Country UPV/EHU, Spain.
- Tomasz Kubiak.
Faculty of Mathematics and Computer Science,
Adam Mickiewicz University (AMU), Poland.
- Jorge Picado.
Department of Mathematics,
University of Coimbra (UC), Portugal.
- Asier Estevan,
- Esteban Induráin.
Departament of Mathematics,
Public University of Navarre (UPNA), Spain.