Book Section

Marstein, N and Stein, M (1989) Climatic conditions in medieval churches. Deterioration due to central heating. In: Building Conservation 88 Symposium. Helsinki, 22-26 August 1988. Report. Finnish National Commission for UNESCO , pp. 245-247. ISBN 951-47-2907-2

Marstein, N and Stein, M (1987) Advanced measuring of the climatic conditions in the medieval wooden churches in Norway. In: ICOM committee for conservation: 8th triennial meeting, Sydney, Australia, 6-11 September, 1987. Preprints. Getty Conservation Institute . ISBN 0-89236-094-1

Book

Olstad, T and Stein, M (1996) Saving art by saving energy. NIKU - Norwegian Institute for Cultural Heritage Research . ISBN 82-426-681-1