A. M. Yano-Melo, C. Vicente, and L. Xavier-Filho, “Allelopathic effect of the Cladonia verticillaris lichen extracts and fumarprotocetraric acid on the early growth of germinating seeds and seedlings in Allium cepa L”., Int. j. hortic. sci., vol. 5, no. 3-4, pp. 31–35., Sep. 1999, doi: 10.31421/IJHS/5/3-4/39.