@article{GDZPPN002461080,
title = {Complete Sufficiency and Maximum Likelihood Estimation for the Two-Parameter Negative Binomial Distribution.},
journal = {Metrika},
volume = {33},
year = {1986},
pages = {349-362},
zbl = {0602.62021},
url = {http://dml.mathdoc.fr/item/GDZPPN002461080}
}
Willson, L.J.; Folks, J.L.; Young, J.H. Complete Sufficiency and Maximum Likelihood Estimation for the Two-Parameter Negative Binomial Distribution.. Metrika, Tome 33 (1986) pp. 349-362. http://gdmltest.u-ga.fr/item/GDZPPN002461080/