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G. D. Anderson, S.-L. Qiu
2018 Proceedings of the American Mathematical Society  
In this paper we obtain a monotoneity property for the gamma function that yields sharp asymptotic estimates for Γ(x) as x tends to ∞, thus proving a conjecture about Γ(x).
doi:10.1090/s0002-9939-97-04152-x fatcat:n6b7jr276ndhrbs7fu5yw2ion4