@article{journal,
author = {Ullastre, J.},
title = {Boceto para un mapa geol{\'o}gico detallado del frente del Montsec (Pirineo catalano-aragon{\'e}s, Espa{\~n}a)},
year = {1998},
volume = {7},
pages = {175--186},
journal = {Treballs del Museu de Geologia de Barcelona},
keywords = {Geological cartography, Montsec Front, Tolba anticline, Mesozoic, Cenozoic, South-Pyrenean units, Catalonia, Aragon, Spain}
}