Exact D-Optimum Designs for Quadratic Regression
证明了在区间上二次回归的D最优设计，其谱点位于区间的端点与中点，且频率尽可能相等。
Summary It is shown that for quadratic regression on an interval a D-optimum design has its spectrum in the end- and mid-points of the interval with frequencies as equal as possible.