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Open Access to the Scientific Journal Literature: Situation 2009
Björk BC,
Welling P,
Laakso M,
Majlender P,
Hedlund T,
et al.
(2010)
Open Access to the Scientific Journal Literature: Situation 2009.
PLOS ONE 5(6): e11273.
https://doi.org/10.1371/journal.pone.0011273