Lamprinou, V. Mammali, M. Katsifas, E.A. Pantazidou, A.I. Karagouni, A.D., Phenotypic and Molecular Biological Characterization of Cyanobacteria from Marble Surfaces of Treated and Untreated Sites of Propylaea (Acropolis, Athens), Geomicrobiology Journal, (30), 371-378, 2013, 0149-0451, 1521-0529