The Development of Open Access Journal Publishing from 1993 to 2009 Laakso, Mikael ; Welling, Patrik ; Bukvova, Helena ; Nyman, Linus ; Björk, Bo-Christer ; Hedlund, Turid Abstract Publication: PLoS ONE Pub Date: June 2011 DOI: 10.1371/journal.pone.0020961 Bibcode: 2011PLoSO...620961L