@inbook{inbook303ec20a,
title   = {Palaeomagnetic data from the central alkaline province, eastern Paraguay},
author = {Ernesto, Márcia and Comin-Chiaramonti, P. and Gomes, Celso B. and Castillo, A. M. C. and Velazquez, Juan Carlos},
year = {1996},
publisher = {EDUSP},
journal   = {Alkaline magmatism in central-eastern Paraguay : relationships with coeval magmatism in Brazil}
}