Metataxes, A., "Information bearing and non-information bearing sets," pp363-368
(1972)
[IFIP] Proc. of IFIP TC-2 Special Working Conf., (1972)
[IFIP] Proc. of IFIP TC-2 Special Working Conf., "An In-depth Technical Evaluation of the CODASYL DDL" 1972
Languages mentioned
DDL
{1972} CODASYL Data Definition Language