Pliszko, Artur, and Malgorzata Jazwa. “Floristic Composition of Vegetation in Habitats Suitable for Erigeron × Huelsenii (Asteraceae)”. Acta Botanica Croatica, vol. 76, no. 1, Apr. 2017, https://ojs3.abc.botanic.hr/index.php/abc/article/view/1650.