López-Salazar, Herminia, et al. “Microwave-Assisted Extraction of β-Sitosterol: A by-Product from Agave Angustifolia Haw Bagasse”. BioResources, vol. 19, no. 1, Nov. 2023, pp. 568-81, https://ojs.bioresources.com/index.php/BRJ/article/view/23061.