Hopkinson, B. (1910). Vibrations of systems having one degree of freedom. University Press.
Lua i Stíl Chicago (17ú heag.)Hopkinson, B. Vibrations of Systems Having One Degree of Freedom. Cambridge [Eng.]: University Press, 1910.
Lua MLA (8ú heag.)Hopkinson, B. Vibrations of Systems Having One Degree of Freedom. University Press, 1910.
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