Hodişan, Nicolae, and Nicolae Csep. “Research on the Allelopathic Effect Among the Species Tanacetum Vulgare and Some Agricultural Crops”. Acta Agraria Debreceniensis, no. 39 (November 10, 2010): 105–109. Accessed April 15, 2021. https://ojs.lib.unideb.hu/actaagrar/article/view/2747.