Mobility patterns of scholar communities in southwestern European countries by Lage, J, d’Espiney, A, Canha, N, Manteigas, V, Alexandre, JL, Gonçalves, K, Chacartegui, R, Lizana, J, Lechón, Y, Gamarra, AR, Fernandez, A, Blondeau, P, Gomes, M, Almeida, SM