@conference{CP03,
    author =    {Cano G\'{o}mez, Antonio and Pin, Jean-\'{E}ric},
    title =     {On a conjecture of Schnoebelen\ConferenceQuatre},
    booktitle = {DLT 2003},
    editor =    {Zolt{\'a}n {\'E}sik, Zolt{\'a}n F{\"u}l{\"o}p},
    publisher = {Springer},
    series =    {Lect. Notes Comp. Sci.},
    number =    2710,
    address =   {Berlin},
    year =      2003,
    pages =     {35--54},
}