Hildreth, H.; Houck, J. (1968). "Some Estimators for a Linear Model with Random Coefficients". Journal of the American Statistical Association. 63 (322): 584–595. doi:10.2307/2284029. JSTOR2284029.
Hildreth, H.; Houck, J. (1968). "Some Estimators for a Linear Model with Random Coefficients". Journal of the American Statistical Association. 63 (322): 584–595. doi:10.2307/2284029. JSTOR2284029.