Liedberg, S. (1991). Earth pressure distribution against rigid pipes under various bedding conditions: Full-scale field tests in sand. Chalmers Tekniska Högskola.
Citace podle Chicago (17th ed.)Liedberg, Sven. Earth Pressure Distribution Against Rigid Pipes Under Various Bedding Conditions: Full-scale Field Tests in Sand. Göteborg: Chalmers Tekniska Högskola, 1991.
Citace podle MLA (9th ed.)Liedberg, Sven. Earth Pressure Distribution Against Rigid Pipes Under Various Bedding Conditions: Full-scale Field Tests in Sand. Chalmers Tekniska Högskola, 1991.
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