K. Saha and S. Paul, Bias-Corrected Maximum Likelihood Estimator of the Negative Binomial Dispersion Parameter, Biometrics, vol.34, issue.1, pp.179-185, 2005.
DOI : 10.1016/0041-008X(76)90139-3

C. E. Shannon, A Mathematical Theory of Communication, Bell System Technical Journal, vol.27, issue.3, pp.379-423, 1948.
DOI : 10.1002/j.1538-7305.1948.tb01338.x

Y. N. Wang, Estimation problems for the two-parameter negative binomial distribution, Statistics & Probability Letters, vol.26, issue.2, pp.113-114, 1996.
DOI : 10.1016/0167-7152(94)00259-2