@article{articlec660c1b0,
title   = {The ultramafic-alkaline and gabbroic alkaline lineages: derivation by fractionation of the ultrabasic alkaline magmas?},
author = {Ulbrich, H. and Rocha-Campos, A. C.},
year = {1985},
journal   = {Anais da Academia Brasileira de Ciências}
}