请问谁有这两篇文章的电子版Muller, H. G. & Stadtmuller, U. (1987).Estimation of heteroscedasticity in regression analysis,
Shi, P.D., Li, G.Y., 1994. On the rates of convergence of minimum L1-norm estimates in a partly linear model. 发到我邮箱:631716867@qq.com,十分感谢!