中国科学院数学与系统科学研究院期刊网
AMS
Sampling from a Mixture of Different Groups of Coupons
Aristides V. DOUMAS, Vassilis G. PAPANICOLAOU
Acta Mathematica Sinica . 2020, (12): 1357 -1383 .  DOI: 10.1007/s10114-020-9425-y