@book{justhis3969,
           title = {Code imp{\^o}ts sur les revenus 1989},
         address = {Bruxelles},
       publisher = {Ced-Samson},
            year = {1989},
        keywords = {law loi wet fiscal tax fiscaal {\'e}conomie economie economy  impot bestaling douane duty},
             url = {http://www.just-his.be/eprints/3969/}
}