Klimeš, L. “Syrphids As Visitors of the Reputedly Anemophilous Rumex Alpinus (Polygonaceae)”. Oecologia Montana 3, no. 1-2 (December 1, 1994): 47-48. Accessed February 22, 2019. https://om.vuvb.uniza.sk/index.php/OM/article/view/41.