Mohit Kumar Dagmar Arndt Steffi Kreuzfeld Kerstin Thurow Norbert Stoll Regina Stoll Fuzzy Techniques for Subjective Workload-Score Modeling Under Uncertainties. 1449-1464 2008 38 IEEE Transactions on Systems, Man, and Cybernetics, Part B 6 http://dx.doi.org/10.1109/TSMCB.2008.927712 db/journals/tsmc/tsmcb38.html#KumarAKTSS08