| Usability management maturity, part 2: usability techniques—what can you do? | 3 | 0.40 | 1996 |
| Usability management maturity, part 1: self assessment—how do you stack up? | 6 | 1.10 | 1996 |
| Usability management maturity, part 2: usability techniques - what can you do? (abstract) | 0 | 0.34 | 1995 |
| Usability management maturity, part 1: self assessment - how do you stack up? (abstract) | 0 | 0.34 | 1995 |
