1. Arkleton (1988 ), Rural change in Europe. Proceedings of the Montpellier Colloquium 6.10. Juli 1987 (Nethy Bridge).
2. A. Blekesaune (1989 ), Survival strategies among Norwegian farmers, paper presented at the 3rd ESRS-Summer School (Bonn).
3. Toward a behavioral model of multiple-job-holding farm families
4. EuropAische Gemeinschaft (1982 ), EUROSTAT multiple job holders (Luxembourg).