“Modification of metabolism of free amino acids in Sempervivum tectorum, L. parasited by Endophyllum sempervivi, Lev” (1959) Revista Española de Fisiología, 15(3), pp. 173–177. Available at: https://revistas.unav.edu/index.php/ref/article/view/48908 (Accessed: 13 July 2025).