@article{journal,
author = {Espa{\~n}ol, F. and Escol{\`a}, O.},
title = {Un nuevo Geotrechus del Alto Arag{\'o}n (Col. Trechinae)},
year = {1981 (1983)},
volume = {7},
pages = {91--92},
journal = {Miscel·l{\`a}nia Zool{\`o}gica}
}