Monitoring Winter and Summer Abundance of Cetaceans in the Pelagos Sanctuary (Northwestern Mediterranean Sea) Through Aerial Surveys Panigada, Simone ; Lauriano, Giancarlo ; Burt, Louise ; Pierantonio, Nino ; Donovan, Greg Abstract Publication: PLoS ONE Pub Date: July 2011 DOI: 10.1371/journal.pone.0022878 Bibcode: 2011PLoSO...622878P