@inproceedings{inproceedings4683691a,
title   = {Geotechnical behavior of brazilian sedimentary rocks},
author = {Campos, Jayme de Oliveira and Paraguassu, Antenor Braga and Dobereiner, Lorenz and Soares, Lindolfo and Frazão, Ely Borges},
year = {1993},
publisher = {A a Balkema},
booktitle   = {International Symposium on Geotechnical Engineering of Hard Soils-Soft Rocks}
}