陈 敏 琼.正态总体标准差的两个无偏估计及性质[J].重庆工商大学学报(自然科学版),2016,33(3):56-59
CHEN Minqiong. Two Unbiased Estimators of the Standard Deviation for Normal Population and their Properties[J]. Journal of Chongqing Technology and Business University(Natural Science Edition),2016,33(3):56-59