1. Analysis of prenatal reflex activity in sheep;Änggård;Acta Physiol. Scand.,1961
2. Foetal development of mesencephal motor functions in the guinea pig;Bergström;Acta Physiol. Scand.,1966
3. The relation between the integrated kinetic energy and the number of action potentials in the electromyogram during voluntary muscle contraction;Bergström;Ann. Acad. Sci. Fenn. Ser A. V. Medica,1962a
4. Prenatal development of motor functions. A study on the intrauterine guinea pig foetus in the conscious, pregnant animal;Bergström;Ann. Chir. Gynaec. Fenn.,1962b
5. On the physiology of the mesodiencephalic extrapyramidal system. With special reference to the pathogenesis of involuntary movements;Bergström;Acta Neurol. Scand.,1963a