Alphonse, A. K. ., B. K. . Célestin, Y. . Ahoua, K. K.-K. . Hypolite, K. K. . Patrice, T. . Nantarie, N. K. . Antoine, K. K. . Eric, and Y.-K. . Albert. “Improvement Tests on the Germination in Lippia Multiflora: Influence of Some Factors Related to Soil on Germination and Seedling Development”. Asian Journal of Agriculture and Rural Development, vol. 3, no. 1, Jan. 2013, pp. 18-29, http://archive.aessweb.com/index.php/5005/article/view/644.