Enstad, G. G. (1981). A novel theory on the arching and doming in mass flow hoppers. Norges Teknisks Høgskole.
Citace podle Chicago (17th ed.)Enstad, Gisle G. A Novel Theory on the Arching and Doming in Mass Flow Hoppers. Bergen, Norway: Norges Teknisks Høgskole, 1981.
Citace podle MLA (8th ed.)Enstad, Gisle G. A Novel Theory on the Arching and Doming in Mass Flow Hoppers. Norges Teknisks Høgskole, 1981.
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