Zuna Pfeiffer, Tanja, et al. “Early Spring Flora of the Sub-Pannonic Steppic Grassland (NATURA 2000 Site) in Bilje, Northeast Croatia”. Acta Botanica Croatica, vol. 75, no. 2, Oct. 2016, https://ojs3.abc.botanic.hr/index.php/abc/article/view/1570.