Cretaceous na-alkaline magmatism from the Misiones Province (Paraguay): its relationships with the paleocene na-alkaline analog from Asunción and geodynamic significance - Velázquez Fernandez, Victor; Comin-Chiaramonti, P.; Cundari, Aldo; Gomes, Celso B.; Riccomini, Claudio (The Journal of Geology, 2006)