@inbook{inbook80f17e10,
title   = {Comparative aspects between post-palaeozoic alkaline rocks from the western and eastern margins of the Parana basin},
author = {Gomes, Celso B. and Morbidelli, Lucio and Ruberti, Excelso and Comin-Chiaramonti, P.},
year = {1996},
publisher = {EDUSP},
journal   = {Alkaline magmatism in central-eastern Paraguay : relationships with coeval magmatism in Brazil}
}