On the Unbiasedness of the Papadakis Estimator and Other Nonlinear Estimators of Treatment Contrasts in Field-Plot Experiments
研究了田间试验中处理对比的空间分析方法，给出了这些方法得到的非线性估计量在假定真实模型下无偏的充分条件。
Spatial methods for the analysis of field-plot experiments are considered. Estimators of treatment contrasts obtained by these methods are generally complicated nonlinear functions of the observations. Sufficient conditions for these estimators to be unbiased under a postulated true model are obtained.