References
McHugh, R. B. Efficient estimation and local identification in latent class analysis.Psychometrika, 1956,21, 331–347.
Reiersøl, O. Identifiability of a linear relation between variables which are subject to error.Econometrica, 1950,18, 375–389.
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Psychometrika, 1956,21, 331–347.
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McHugh, R.B. Note on “efficient estimation and local identification in latent class analysis”. Psychometrika 23, 273–274 (1958). https://doi.org/10.1007/BF02289241
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DOI: https://doi.org/10.1007/BF02289241