Institution: | 1. Departamento de Métodos Estadísticos, IUMA, Universidad de Zaragoza, Zaragoza, Spain 2. Departament de Matemàtica Aplicada II, UPC, Barcelona, Spain 3. Erato Kawarabayashi Large Graph Project, JST, National Institute of Informatics (NII), Tokyo, Japan 4. Departamento de Matemática and CIDMA, Universidade de Aveiro, Aveiro, Portugal 5. Department of Mathematics and European Centre of Excellence NTIS (New Technologies for the Information Society), University of West Bohemia, Pilsen, Czech Republic 6. Department of Mathematics, California State University Northridge, Los Angeles, USA
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