A Comparison of Iterative Maximum Likelihood Estimates of the Parameters of a Mixture of Two Normal Distributions Under Three Different Types of Sample

David W. Hosmer, Jr., A Comparison of Iterative Maximum Likelihood Estimates of the Parameters of a Mixture of Two Normal Distributions Under Three Different Types of Sample, Biometrics, Vol. 29, No. 4 (Dec., 1973), pp. 761-770