Article

Olstad, T and Tone, M (1994) Mediaeval wooden churches in a cold climate – Parish churches or museums? Preventive conservation: practice, theory and research. Preprints of the contributions to the Ottawa Congress, 12-16 September 1994 . pp. 99-103.

Book Section

Olstad, T and Haugen, A (2007) Warm feet and cold art: is this the solution? Polychrome wooden ecclesiastical art - Climate and dimensional changes. In: Museum Microclimates. National Museum of Denmark. ISBN 978-87-7602-080-4

Book

Olstad, T and Haugen, A and Nilsen, T (2001) Polychrome wooden ecclesiastical art - Climate and dimensional changes. NIKU Publikasjoner (110). NIKU. ISBN 1502-4903

Olstad, T and Haugen, A (1997) Climates in stave churches: Localised heating of the congregation in Kaupanger Stave church. NIKU Fagrapport (4). Riksantikvaren. ISBN 0805-4703

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