| 2008 | ||
|---|---|---|
| 1 | EE | Erica Melis, Arndt Faulhaber, Anja Eichelmann, Susanne Narciss: Interoperable Competencies Characterizing Learning Objects in Mathematics. Intelligent Tutoring Systems 2008: 416-425 |
| 1 | Anja Eichelmann | [1] |
| 2 | Erica Melis | [1] |
| 3 | Susanne Narciss | [1] |