1. Rehabilitation of patients with heart disease;Hellerstein;Postgrad. Med.,1964
2. Herz Kreislaufkrankheiten und Sport;Reindell,1960
3. Circulatory studies on healthy old men;Strandell;Acta med. scand.,1964
4. Experimental studies of physical working capacity in relation to sex and age;Astrand,1952
5. The working capacity in normal children evaluated by submaximal exercise on the bicycle ergometer and compared with adults;Bengtson;Acta med. scand.,1956