This section lists texts and papers that are recommended reading for obtaining additional information.
Clough, R. W. and J. Penzien, Dynamics of Structures, McGraw-Hill, 1975.
NAFEMS Ltd., A Finite Element Dynamics Primer, 1993.
Spence, P. W. and C. J. Kenchington, The Role of Damping in Finite Element Analysis, Report R0021, NAFEMS Ltd., 1993.