@article{articlee9007452,
title   = {Constraints on some phase relations in the system CaO-MnO-MgO-K2O-Al2O3-SiO2-H2O inferred from mineral data from Buritirama, Brazil},
author = {Schultz-Güttler, Rainer Aloys and Peters, Tj. and Valarelli, José Vicente},
year = {1986},
journal   = {Schweizerische mineralogische und petrographische mitteilungen}
}