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Journal of Controlled Release > 2013 > 167 > 1 > 68-75
International Journal of Pharmaceutics > 2009 > 373 > 1-2 > 133-140
Journal of Controlled Release > 2003 > 87 > 1-3 > 33-47
Pharmaceutical Science & Technology Today > 2000 > 3 > 11 > 393-397