Rodríguez-Rodríguez, R. M., P. Herrera, and E. Furrazola. “Arbuscular Mycorrhizal Colonization in Asteraceae from White Sand Savannas, in Pinar Del Río, Cuba”. Biota Neotropica, vol. 13, no. 3, Sept. 2013, //www.biotaneotropica.org.br/BN/article/view/1249.