Vermeer, P. A. (1980). Formulation and analysis of sand deformation problems.
Čikaški stil citiranja (17. izdanje)Vermeer, Pieter Anne. Formulation and Analysis of Sand Deformation Problems. 1980.
MLA način citiranja (8. izdanje)Vermeer, Pieter Anne. Formulation and Analysis of Sand Deformation Problems. 1980.
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