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Lua i Stíl Chicago (17ú heag.)Saperstein, L., L.W Saperstein, agus R. Franklin. The Dynamics of Granular Solids. 1967.
Lua MLA (9ú heag.)Saperstein, L., et al. The Dynamics of Granular Solids. 1967.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.