Bibliography
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1. K.J. BATHE, E.L. WILSON: "Numerical Methods in Finite Element Analysis" - PRENTICE HALL Inc.


2. T.J.R. HUGHES: "The Finite Element Method, Linear Static and Dynamic Finite Element Analysis" - 1987 - PRENTICE HALL Inc.


3. S. COURTIER - ARNOUX and COLL: "Function course notes: Structural Dynamics" - note HP-61/94/189.


4. G. JACQUART, S. GARREAU: "Adaptive time step integration algorithm in *Code_Aster* - note HP-61/95/023.


5. A.C. LEGER: "Introduction of the explicit "centered differences" and "adaptive time steps" schemes in the DYNA_VIBRA/BASE_CALCUL =' PHYS 'operator of *Code_Aster*.