doi dblp Effect of instantaneous retrieval on indexing criteria Emil H. Levine 1974 Volume 25 Issue 3
doi dblp MIS spinoff of a conventional STINFO retrieval system Emil H. Levine 1973 Volume 24 Issue 4
doi dblp National Security Council Directive Establishes Data Index System Emil H. Levine 1973 Volume 24 Issue 1