An authorization mechanism for a relational data base system

P. P. Griffiths, B. W. Wade
1976 Proceedings of the 1976 ACM SIGMOD international conference on Management of data - SIGMOD '76  
doi:10.1145/509383.509393 dblp:conf/sigmod/GriffithsW76 fatcat:rp3ilfcgpnhydn6balhduhhso4