Abd-dada, H., S. Bouda, Y. Aitbella, in A. Haddioui. „Phenotypic Diversity of Natural Populations of an Endemic Moroccan Plant (Euphorbia Resinifera Berg)“. Hacquetia, let. 22, št. 1, januar 2023, str. 81-90, doi:10.2478/hacq-2022-0015.