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2. Exploratory study of the flow of granules through apertures;Brown;Transactions of the Institute of Chemical Engineers,1959
3. Profiles of flow of granules through apertures;Brown;Transactions of the Institute of Chemical Engineers,1960
4. Flow of granular material through a circular orifice;Franklin;Chemical Engineering Science,1955
5. The flow of granular solids through orifices;Baverloo;Chemical Engineering Science,1961