Agbaba Danica D,Novovic Dragana,Karljikovic-Rajic Katarina D,Marinkovic Valentina D (2004) Densitometric determination of omeprazole, pantoprazole, and their impurities in pharmaceuticals, JPC-JOURNAL OF PLANAR CHROMATOGRAPHY-MODERN TLC, vol. 17, br. 3, str. 169-172 (Article) Karljikovic-Rajic Katarina D,Novovic Dragana,Marinkovic Valentina D,Agbaba Danica D (2003) First-order UV-derivative spectrophotometry in the analysis of omeprazole and pantoprazole sodium salt and corresponding impurities, JOURNAL OF PHARMACEUTICAL AND BIOMEDICAL ANALYSIS, vol. 32, br. 4-5, str. 1019-1027 (Article)