Influences of Temperature on the Conversion of Ammonium Tungstate Pentahydrate to Tungsten Oxide Particles with Controllable Sizes, Crystallinities, and Physical Properties - Nandiyanto, Asep Bayu Dani; Department of Chemistry, Indonesia University of Education – UPI, Jl. Dr. Setiabudhi No. 229 Bandung 40154, West Java (Universitas Gadjah Mada, 2016)