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Influence of boundary conditions on three-dimensional vibration characteristics of thick ...
J Sound Vib 2016; 364(1): 110–132. 15. Fromme A and Leissa AW. Free vibration of the rectangular parallelepiped. J Acoust Soc Am 1970; 48(1): 290–298. 16. Leissa AW and Zhang ZD. On the ...