Wijesiri, U W; Williams, C J (1995) Approximate solutions for the maximum-likelihood estimates in models of univariate human twin data. Behav Genet 25:211-6
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Williams, C J; Wijesiri, U W (1993) Lipid data from NHLBI veteran twins: interpreting genetic analyses when model assumptions fail. Genet Epidemiol 10:551-6
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Williams, C J (1993) On the covariance between parameter estimates in models of twin data. Biometrics 49:557-68
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Williams, C J; Christian, J C (1992) Plots for examination of univariate twin data. Comput Biomed Res 25:527-37
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Williams, C J; Viken, R; Rose, R J (1992) Likelihood-based analyses of longitudinal twin and family data: experiences with pedigree-based approaches. Behav Genet 22:215-23
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Williams, C J; Christian, J C; Norton Jr, J A (1992) TWINAN90: a FORTRAN program for conducting ANOVA-based and likelihood-based analyses of twin data. Comput Methods Programs Biomed 38:167-76
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