Search results for: Javier Pérez Alvarez
Journal of Geometry and Physics > 2007 > 57 > 3 > 1089-1097
Journal of Geometry and Physics > 2006 > 57 > 1 > 293-295
Journal of Geometry and Physics > 2007 > 57 > 3 > 1089-1097
Journal of Geometry and Physics > 2006 > 57 > 1 > 293-295