@article{DBLP:journals/jancl/Cialdea93,
author = {Marta Cialdea},
title = {Herbrand style proof procedures for modal logic},
journal = {Journal of Applied Non-Classical Logics},
volume = {3},
number = {2},
year = {1993},
pages = {205-223},
ee = {http://dx.doi.org/10.1080/11663081.1993.10510808},
bibsource = {DBLP, http://dblp.uni-trier.de}
}