1. Ariño, X., 1996. Estudio de la colonisación, distribución e interacción de líquenes, algas y cianobacterias con materiales pétreos de los conjuntos arqueológicos de Baelo Claudia y Carmona. Ph.D. Universidad de Barcelona and IRNA de Sevilla, Spain.
2. Algal biomass and primary production within a temperate zone sandstone;Bell;American Journal of Botany,1987
3. Modified dimethyl sulfoxide (DMSO) extraction for chlorophyll analysis of phytoplankton;Burnison;Canadian Journal of Fisheries and Aquatic Science,1980
4. Abrasion pH, an index of chemical weathering;Grant;Clays and Clay Minerals,1969
5. Bioreceptivity: a new concept for building ecology studies;Guillite;Science of the Total Environment,1995