de Zulueta, J., and J. L. Montoto. “The Effect of Temperature and Humidity on the Germination of Holm Oak and Cork Oak Acorns”. Forest Systems 1, no. 1 (June 1, 1992): 65-71. Accessed August 2, 2026. https://fs.revistas.csic.es/index.php/fs/article/view/483.