@inproceedings{inproceedings10f58a4a,
title   = {Comparison of fracture toughness testing methods on basalt and granite},
author = {Pehovaz-Alvarez, Humberto Iván and Bortolucci, Antônio Airton and Celestino, Tarcísio Barreto},
year = {2004},
booktitle   = {ISRM Regional Symposium Eurock 2004}
}