1. Arterial blood pressure;Altman,1964
2. Specifications for Audiometers;American National Standards Institute,1969
3. Exercise and aging;Asmussen,1979
4. Electrocardiographic changes in relation to the type of exercise, the work load, age and sex;Astrand,1969
5. Frequency variability in the aged voice;Benjamin;J. Gerontol.,1981