BIBCYT http://bibcyt.ucla.edu.ve/cgi-win/be_alex.exe?Ultimo&Nombrebd=BIBCYT UCLA - Biblioteca de Ciencias y Tecnologia Felix Morales Bueno Kerschen, Gaetan P Principal Lee, Young Sup P Principal Vakakis, Alexander F. P Principal McFarland, D. Michael P Principal Bergman, Lawrence A. P Principal Irreversible Passive Energy Transfer in Coupled Oscillators with Essential Nonlinearity Vol: 66 648-679 p.