1. Canadian Standard Association, 2005. Technical Requirements for In-Service Evaluation of Zirconium Alloy Pressure Tubes in CANDU Reactors. CSA – N285.8.
2. Canadian Standard Association, 2009. Periodic inspection of CANDU Nuclear Power Plant Components. CSA N285.4.
3. Variance function estimation;Davidian;J. Am. Stat. Assoc.,1987
4. Estimating regression models with multiplicative heteroscedasticity;Harvey;Econometrica,1976
5. Estimation of parameters in heteroscedastic linear models;Mak;J. R. Stat. Soc. Ser. B (Methodol.),1992