Grassi, M Experimental determination of the theophylline diffusion coefficient in swollen sodium-alginate membranes. [electronic resource] - Journal of controlled release : official journal of the Controlled Release Society Sep 2001 - 93-105 p. digital Publication Type: Journal Article ISSN: 0168-3659 Standard No.: 10.1016/s0168-3659(01)00424-2 doi Subjects--Topical Terms: Alginates--administration & dosageDiffusionGlucuronic AcidHexuronic AcidsMathematicsModels, TheoreticalTheophylline--administration & dosage