AGUIAR, C.; MONTEIRO-HENRIQUES, T.; SÁNCHEZ-MATA, D. New Contributions on Flora and Vegetation of northeastern Portugal ultramafic outcrops. Lazaroa, v. 34, p. 141–150, 23 Dec.2013 https://doi.org/10.5209/rev_LAZA.2013.v34.n1.43642.