R. Di Pietro, «Observations on the beech woodlands of the Apennines (peninsular Italy): an intricate biogeographical and syntaxonomical issue», Lazaroa, vol. 30, pp. 89–97, feb. 2010, Accedido: jul. 26, 2026. Disponible en: https://revistas.ucm.es/index.php/LAZA/article/view/LAZA0909110089A