Affiliation: | 1. Université Libre de Bruxelles (ULB), Brussels, Belgium;2. Carleton University, Ottawa, Canada;3. National Institute of Informatics, Tokyo, Japan;4. JST, ERATO, Kawarabayashi Large Graph Project, Tokyo, Japan;5. Dept. de Matemática & CIDMA, Universidade de Aveiro, Portugal;6. Universitat Politècnica de Catalunya (UPC), Barcelona, Spain |