
Bjørn Christiansen: Thus speaks the Body. Attempts toward a personology from the point of view of respiration and postures. Body Movement Perspectives in Research, Oslo, Institute for Social Research, 1963, Arno Press Inc, 1972.
Peter A. Levine`s PhD i medisinsk biofysikk: Accumulated Stress, Reserve Capacity and Stress, Universitetet i Berkeley, California, 1976 .