@article{CRMECA_2012__340_4-5_181_0,
     author = {John R. Willis},
     title = {The construction of effective relations for waves in a composite},
     journal = {Comptes Rendus. M\'ecanique},
     pages = {181--192},
     publisher = {Elsevier},
     volume = {340},
     number = {4-5},
     year = {2012},
     doi = {10.1016/j.crme.2012.02.001},
     language = {en},
}