El Bouhissi, M., Mehdadi, Z., & El Zerey, W. (2016). influence of altitude and slope on the density of Asphodelus microcarpus Salzm & Viv. in the Mount of Tessala (Western Algeria). International Journal of Environment, 5(3), 43–56. https://doi.org/10.3126/ije.v5i3.15703