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