Optimation of sodium citric and fumaric acid as acid sources in effervescent granule of Curcuma xanthorrhiza Roxb. extract by wet granulation - Lestari, A. Budi Susiana; Faculty of Pharmacy Sanata Dharma University, Yogyakarta (Faculty of Pharmacy Universitas Gadjah Mada, Yogyakarta, Skip Utara, 55281, Indonesia, 2007)