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Lua i Stíl Chicago (17ú heag.)Liu, G., agus G. Houlsby. Numerical Modelling of Damage to Masonry Buildings Due to Tunnelling. 1997.
Lua MLA (9ú heag.)Liu, G., agus G. Houlsby. Numerical Modelling of Damage to Masonry Buildings Due to Tunnelling. 1997.
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