@article{journal,
author = {Vargas, J. M. and Real, R. and Palomo, L. J.},
title = {On identifying significant co-occurrence of species in space and time},
year = {1997},
volume = {20.2},
pages = {49--58},
journal = {Miscel·l{\`a}nia Zool{\`o}gica},
keywords = {Corotipo, cronotipo, Clasificaci{\'o}n probabil{\'i}stica, Regresi{\'o}n log{\'i}stica, Factores ambientales, Biogeograf{\'i}a}
}