Ziaja, M., and T. Wójcik. “Occurrence of the Globeflower Trollius Europaeus L. In ‘Łąki W Komborni’ Natura 2000 Site (Podkarpackie Province, SE Poland)”. Ecological Questions, vol. 23, Dec. 2016, pp. 61-69, doi:10.12775/EQ.2016.006.