Pérez-Cirera J. L. y Gallardo T. (1981). Notes on the benthic vegetation from the Iberian Peninsula.II. Ulva rigida C. Agardh var. fimbriata J. Agardh in coastal Spain: morphological and anatomical variability. Lazaroa, 3, 227-233. https://revistas.ucm.es/index.php/LAZA/article/view/LAZA8181110227A