| |
| 1991 | ||
|---|---|---|
| 3 | Gary W. Hansen, James V. Hansen: An approximate user-complexity measure for relational query language systems. Data Knowl. Eng. 6: 393-407 (1991) | |
| 1988 | ||
| 2 | Gary W. Hansen, James V. Hansen: Human Performance in Relational Algebra, Tuple Calculus, and Domain Calculus. International Journal of Man-Machine Studies 29(5): 503-516 (1988) | |
| 1987 | ||
| 1 | Gary W. Hansen, James V. Hansen: Procedural and Non-Procedural Query Languages Revisited: A Comparison of Relational Algebra and Relational Calculus. International Journal of Man-Machine Studies 26(6): 683-694 (1987) | |
| 1 | James V. Hansen | [1] [2] [3] |