Determination of the relative amounts of three crystal forms of a benzimidazole drug in complex finished formulations by FT-Raman spectroscopy - De Spiegeleer, B.; Seghers, D.; Wieme, R.; Schaubroeck, J.; Verpoort, F.; Slegers, G.; Van Vooren, L. (Journal of Pharmaceutical & Biomedical Analysis, 2005)