Global Monthly Water Scarcity: Blue Water Footprints versus Blue Water Availability Hoekstra, Arjen Y. ; Mekonnen, Mesfin M. ; Chapagain, Ashok K. ; Mathews, Ruth E. ; Richter, Brian D. Abstract Publication: PLoS ONE Pub Date: February 2012 DOI: 10.1371/journal.pone.0032688 Bibcode: 2012PLoSO...732688H