B. Gordo and S. Hadjadj- Aoul, “Confirmation of the presence of Stipa apertifolia subsp. longiglumis (H. Scholz) Vázquez & Devesa (Poaceae) in the Ksour Mountains (Aïn Sefra, Algérie)”, abm, vol. 46, pp. 131–134, Jul. 2021, doi: 10.24310/abm.v46i.12422.