"A set theoretic data structure and retrieval language" (PDF), William R. Hershey and Carol H. Easthope, Paper from the Session on Data Structures, Spring Joint Computer Conference, May 1972 in ACM SIGIR Forum, Volume 7, Issue 4 (December 1972), pp. 45-55, DOI=10.1145/1095495.1095500 https://docs.google.com/open?id=0B4t_NX-QeWDYNmVhYjAwMWMtYzc3ZS00YjI0LWJhMjgtZTYyODZmNmFkNThh
"Sets, Data Models and Data Independence", by Ken North a Dr. Dobb's Blogger, March 10, 2010 http://drdobbs.com/blogs/database/228700616
Description of a set-theoretic data structure, D. L. Childs, 1968, Technical Report 3 of the CONCOMP (Research in Conversational Use of Computers) Project, University of Michigan, Ann Arbor, Michigan, USA http://hdl.handle.net/2027.42/4163
Feasibility of a Set-Theoretic Data Structure : A General Structure Based on a Reconstituted Definition of Relation, D. L. Childs, 1968, Technical Report 6 of the CONCOMP (Research in Conversational Use of Computers) Project, University of Michigan, Ann Arbor, Michigan, USA http://hdl.handle.net/2027.42/4164
MICRO Information Management System (Version 5.0) Reference Manual, M.A. Kahn, D.L. Rumelhart, and B.L. Bronson, October 1977, Institute of Labor and Industrial Relations (ILIR), University of Michigan and Wayne State University https://docs.google.com/viewer?a=v&pid=explorer&chrome=true&srcid=0B4t_NX-QeWDYZGMwOTRmOTItZTg2Zi00YmJkLTg4MTktN2E4MWU0YmZlMjE3
MICRO: A Relational Database Management System, Harry F. Clark, David E. Hetrick, Robert C. Bressan, July 1992, Institute of Labor and Industrial Relations (ILIR), University of Michigan, 451 pages, ISBN 9780877363507 https://docs.google.com/open?id=0B4t_NX-QeWDYZGJqRVBaSEdMVnc
Feasibility of a Labor Market Information System, Volume 3, Final Report for Period July 1, 1970-June 30, 1974, Malcolm S. Cohen, Labor Market Information System (LMIS) Project, Institute of Labor and Industrial Relations, University of Michigan, June 1974, 76 pages, PDF http://www.eric.ed.gov/ERICWebPortal/search/detailmini.jsp?_nfpb=true&_&ERICExtSearch_SearchValue_0=ED094719&ERICExtSearch_SearchType_0=no&accno=ED094719
MICRO Information Management System (Version 5.0) Reference Manual, M.A. Kahn, D.L. Rumelhart, and B.L. Bronson, October 1977, Institute of Labor and Industrial Relations (ILIR), University of Michigan and Wayne State University https://docs.google.com/viewer?a=v&pid=explorer&chrome=true&srcid=0B4t_NX-QeWDYZGMwOTRmOTItZTg2Zi00YmJkLTg4MTktN2E4MWU0YmZlMjE3
"Chapter 6: MICRO" in Introduction to database management systems on MTS, Rick Rilio, User Guide Series, Computing Center, University of Michigan, March 1986, pages 147-189 http://babel.hathitrust.org/cgi/pt?view=image;size=100;id=mdp.39015014920717;page=root;seq=5
"Sets, Data Models and Data Independence", by Ken North a Dr. Dobb's Blogger, March 10, 2010 http://drdobbs.com/blogs/database/228700616
"A Relational Model of Data for Large Shared Data Banks", E.F. Codd, Communications of the ACM, volume 13, issue 6 (June 1970), pp. 77–387, doi= 10.1145/362384.362685 https://dx.doi.org/10.1145/362384.362685
"A set theoretic data structure and retrieval language" (PDF), William R. Hershey and Carol H. Easthope, Paper from the Session on Data Structures, Spring Joint Computer Conference, May 1972 in ACM SIGIR Forum, Volume 7, Issue 4 (December 1972), pp. 45-55, DOI=10.1145/1095495.1095500 https://docs.google.com/open?id=0B4t_NX-QeWDYNmVhYjAwMWMtYzc3ZS00YjI0LWJhMjgtZTYyODZmNmFkNThh
MICRO Information Management System (Version 5.0) Reference Manual, M.A. Kahn, D.L. Rumelhart, and B.L. Bronson, October 1977, Institute of Labor and Industrial Relations (ILIR), University of Michigan and Wayne State University https://docs.google.com/viewer?a=v&pid=explorer&chrome=true&srcid=0B4t_NX-QeWDYZGMwOTRmOTItZTg2Zi00YmJkLTg4MTktN2E4MWU0YmZlMjE3
"Use of a Relational Database to Support Clinical Research: Application in a Diabetes Program", Diane Lomatch, M.P.H., Terry Truax, M.S., Peter Savage, M.D., Diabetes Center Unit, MDRTC, University of Michigan, 1981 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2581360/pdf/procascamc00021-0314.pdf
Documentation for MIDAS, Daniel J. Fox and Kenneth E. Guire, Third Edition (September 1976), Statistical Research Laboratory, University of Michigan, 203 pp. http://babel.hathitrust.org/cgi/pt?id=mdp.39015004498013;page=root;view=image;size=100;seq=3;num=i
"Converting from Traditional File Structures to Database Management Systems: A Powerful Tool for Nursing Management", Yvonne Marie Abdoo, Ph.D., R.N, Wayne State University College of Nursing, 1987 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2245120/pdf/procascamc00019-0674.pdf