| Affiliation: | 1. Universidad de Cádiz, Puerto Real, Cádiz, Spain;2. CMCC, Universidade Federal do ABC, Santo André, Brazil;3. CMUP, Faculdade de Ciências, Universidade do Porto, Porto, Portugal;4. Moscow Center for Fundamental and Applied Mathematics, Moscow, Russia;5. Departamento de Matemática, Universidade Federal de Santa Catarina, Florianópolis, Brazil;6. Departamento de Matemática, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Caparica, Portugal;7. Saint Petersburg University, Saint Petersburg, Russia;1. Utah State University, Department of Mathematics and Statistics, Logan UT 84341, USA;2. Hung Vuong University, Faculty of Natural Sciences, Viet Tri, Phu Tho, Viet Nam;3. Université Bretagne Sud, Laboratoire de Mathématiques de Bretagne Atlantique, UMR CNRS 6205, Campus de Tohannic, BP 573 F-56017 Vannes, France;1. State University of Campinas, 651 Sergio Buarque de Holanda, 13083-859 Campinas, SP, Brazil;2. Technische Universität München, Zentrum Mathematik - M11, Boltzmannstr. 3, 85748 Garching, Germany |
