Retana-Sánchez, K., R. Agüero-Alvarado, M. Montiel-Longhi, and S. Brenes-Prendas. “ As a Potential Weed in Costa Rica”. Agronomía Mesoamericana, vol. 24, no. 1, May 2013, pp. 189-93, doi:10.15517/am.v24i1.9797.