@article{articlec624c939,
title   = {Carbonatites from eastern Paraguay and genetic relationships with potassic magmatism: C, O, Sr and Nd isotopes},
author = {Castorina, F. and Censi, P. and Comin-Chiaramonti, P. and Piccirillo, E. M. and Alcover Neto, Arnaldo and Gomes, Celso B. and Almeida, Teodoro Isnard Ribeiro de and Speziale, S. and Toledo, Maria Cristina Motta de},
year = {1997},
doi = {10.1007/bf01172487},
journal   = {Mineralogy and petrology}
}