Valkó, O., M. Zmihorski, I. Biurrun, J. Loos, R. Labadessa, and S. Venn. “Ecology and Conservation of Steppes and Semi-Natural Grasslands”. Hacquetia, vol. 15, no. 2, Aug. 2016, https://ojs.zrc-sazu.si/hacquetia/article/view/4639.