7Narvla SC,Wellington JF. Prediction,linear regression and the minimum sum of relative errors[J].Technometrics,1977,(02):185-191.
8Arnold B,Stahlecker P. Relative squared error prediction in the generalized linear regression model[J].Statistical Papers,2003,(01):107-115.doi:10.1007/s00362-002-0136-5.
9Tong T J,Liu AN,Wang YD. Relative errors of difference-based variance estimators in nonparametric regression[J].Communications in Statistics-Theory and Methods,2008,(18):2890-2902.
