@article{uoadl:3391964,
    pages = "263-284",
    journal = "The international practice of law",
    BIBTEX_ENTRY = "article",
    author = "Widmer, Peter and Maurenbrecher, Benedikt",
    isbn = "904110738X, 371901651X",
    publisher = "Helbing & Lichtenhahn,Kluwer Law International",
    title = "What' s negative about negative declarations?"
}