Chamberlain Solomon Bassey, and Emmanuel Paul Okoi. “Comparative Evaluation of the Allelopathic Effects of the Leaf Extracts of Three Asteraceae Species (Ageratum Conyzoides, Vernonia Amygdalina, Artemisia Annua)”. Archives of Current Research International, vol. 15, no. 3, Dec. 2018, pp. 1–8, doi:10.9734/ACRI/2018/45397.