Properties of Estimators for the Gamma Distribution.
K.O. Bowman, L. R. Shenton · Journal of the Royal Statistical Society Series C (Applied Statistics) · 1989
Accurate moments of maximum likelihood and moment estimators for the scale and shape parameters of a two parameter gamma density are given, the former being tabulated over a segment of the parameter space. In addition, joint acceptance regions are given for a particular case. The three parameter model is also considered and comments made on second order asymptotics for the maximum likelihood estimators