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@article{Carrier2002,  title = {{Search for duplicity in periodic variable Be stars}},  author = {Carrier, Fabien and Burki, G and Burnet, M},  title = {{Search for duplicity in periodic variable Be stars}},  journal = {Astronomy \& Astrophysics},  year = {2002},  volume = {385},  number = {2},  pages = {488--502},  year = {2002},  publisher = {EDP Sciences},  }  @article{Porter1996,