1. Quelques remarques sur le cone de Stieltjes;Berg,1980
2. A completely monotone function related to the gamma function;Berg;J. Comput. Appl. Math.,2001
3. Means and Their Inequalities;Bullen,1988
4. Higher Transcendental Functions;Erdélyi,1953
5. On Mulholland's inequality;Jarczyk;Proc. Amer. Math. Soc.,2002