“Modification of Metabolism of Free Amino Acids in Sempervivum Tectorum, L. Parasited by Endophyllum Sempervivi, Lev”. Revista Española de Fisiología 15, no. 3 (September 1, 1959): 173–177. Accessed July 12, 2025. https://revistas.unav.edu/index.php/ref/article/view/48908.