@book{Christiansen, author = {Christiansen, B.}, title = {Studies in Respiration and Personality. 3. A preliminary version of a respiratory modulation test - its theoretical perspective and empirical foundation, Oslo (Institute for Social Research) 1965.}, language = {en} } @book{Christiansen, author = {Christiansen, B.}, title = {Thus speaks the body, Oslo 1963.}, language = {en} }