1. Special Functions;Andrews,1999
2. Lecons sur les séries divergentes;Borel,1928
3. Asymptotic Expansions;Erdélyi,1956
4. Higher Transcendental Functions, vols. I, II;Erdélyi,1981
5. Inequalities generated by the gamma function;Grinshpan;Adv. in Appl. Math.,2002