Roman, J.M., Blanca, G., Di?az de la Guardia, C. and Romero, A.T. 1992. Contribution to the palynological study of the genus Helianthemum Miller (Cistaceae) in the peninsular southeast. Acta Botanica Malacitana. 17, (Dec. 1992), 261–266. DOI:https://doi.org/10.24310/abm.v17i.9098.