Martín, J. A., Solla, A., Burón, M., López-Almansa, J. C. and Gil, L. (2006) “Historical, ecological, taxonomic and health characterization of the relict elm stand of Rivas-Vaciamadrid (Madrid)”, Forest Systems, 15(2), pp. 208-217. doi: 10.5424/srf/2006152-00965.