1. The effect of ginseng, vitamins and minerals on the physical work capacity in middle-aged men;Tesch;Läkartidningen,1987
2. Effect of Geriatric Pharmaton on convalescents—a comparative study;Mor,1988
3. Action of a preparation containing a standardized ginseng extract (Geriatric Pharmaton) on physical and mental performance;Dörling;Ärztl Praxis,1989
4. Effects of a standardized ginseng extract combined with dimethyl-aminoethanol bitartrate, vitamins, minerals, and trace elements on physical performance during exercise;Pieralisi;Clin Ther,1991
5. Clinical effects of ginseng preparations;Sandberg;Z präklin klin Geriatrie,1974