Wichmann Matthiessen, C., Winkel Schwarz, A. og Find, S. (2000) “Research centers of the world: Strength, networks and nodality. An analysisbased on bibliometric indicators”, Geografisk Tidsskrift, 100. Tilgængelig hos: https://tidsskrift.dk/geografisktidsskrift/article/view/42377 (Set: 27 september 2024).