@inbook{inbook41551e60,
title   = {Alkaline magmatism in Paraguay: a review},
author = {Gomes, Celso B. and Comin-Chiaramonti, P. and Velázquez Fernandez, Victor and Orué, Delio},
year = {1996},
publisher = {EDUSP},
journal   = {Alkaline Magmatism in Central-Eastern Paraguay: relationships with coeval magmatism in Brazil}
}