AUTHOR=Pinna Daniela TITLE=Biofilms and lichens on stone monuments: do they damage or protect? JOURNAL=Frontiers in Microbiology VOLUME=5 YEAR=2014 URL=https://www.frontiersin.org/journals/microbiology/articles/10.3389/fmicb.2014.00133 DOI=10.3389/fmicb.2014.00133 ISSN=1664-302X