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2. Finite dynamic model for infinite media;Lysmer;J Eng Mech ASCE,1969
3. Unified boundary for finite dynamic models;White;J Eng Mech ASCE,1977
4. Infinite elements;Bettess;Int J Numer Methods Eng,1977
5. Infinite elements for elastodynamics;Medina;Earthquake Eng Struct Dynamics,1982