1. “Observed Score Test Equating: A Mathematical Analysis of Some ETS Equating Procedures”;Braun,1982
2. “Section Pre-equating: A Preliminary Investigation”;Holland,1982
3. Powers , D.E. Swinton , S.S. “Effects of Self-Study of Test Familiarization Material on the Analytical Sections of the GRE Aptitude Test Princeton, N.J. Educational Testing Service, Graduate Record Examination Board
4. “Relating Tests given to Different Samples”;Rubin;Psychometrika,1978
5. Wild , C.L. Swinton , S.S. Wallmark , M.M. “GRE Aptitude Test Practice Effects and Item Types Princeton, N.J. Educational Testing Service, Graduate Record Examination Board