@article{CRMECA_2004__332_8_647_0,
     author = {Rustem R. Gadyl'shin},
     title = {On regular and singular perturbations of acoustic and quantum waveguides},
     journal = {Comptes Rendus. M\'ecanique},
     pages = {647--652},
     publisher = {Elsevier},
     volume = {332},
     number = {8},
     year = {2004},
     doi = {10.1016/j.crme.2004.03.010},
     language = {en},
}