When the Sum is a Minimal Sufficient Statistics for the Parameter of a Discrete Distribution with Finite Values?
ZHANG Yingying; RONG Tengzhong; LI Manman
CHINESE JOURNAL OF APPLIED PROBABILITY AND STATIST . 2019, (6): 611 -620 .  DOI: 10.3969/j.issn.1001-4268.2019.06.005