1. Bernien, M., 1997: Anforderungen an eine qualitative und quantitative Darstellung der beruflichen Kompetenzentwicklung, in: QUEM (Hrsg.): Kompetenzentwicklung’ 97, Münster usw.
2. Bjèrnåvold, J., 1997a: Assessment of Non-Formal Learning — the qualities and limitations of methodologies, in: Vocational Training. European Journal, 12
3. Bjèrnåvold, J., 1997b: A Question of Faith? Methodologies and systems for assessing non-formal learning require a legitimate basis. Vocational training. European Journal, 12
4. Bjèrnåvold, J., 1998: Validation and Recognition of Non-Formal Learning — the question of validity, reliability and legitimacy, in: CEDEFOP: Vocational education and training — the European research field. Background report II, Luxemburg
5. Bjèrnåvold, J., 2000: Making Learning Visible — identification, assessment and recognition of non-formal learning in Europe, Thessaloniki