@book{justhis1971,
           title = {Introduction historique au droit},
          author = {John Gilissen},
         address = {Bruxelles},
       publisher = {Presses universitaires},
            year = {1976},
        keywords = {Universit{\'e} University Universiteit law wet loi Gilissen},
             url = {http://www.just-his.be/eprints/1971/}
}