A Pooled Cross-Section Time Series Model of Coupon Promotions."
Another Look at Advertising and Concentration,"
(1971). Elements of Econometrics.
Empirical Production Function Free of Management Bias."
Estimation of Production Function Parameters Combining Time-Series and CrossSection Data."
(1981). How Coupons Measure Up." Advertising Age,
(1980). Nielsen Company.
(1964). Some Aspects of Estimating Statistical Cost Functions,"
Test of Equality between Sets of Coefficients in Two Linear Regression."
The Use of Error Components Models in Combining Cross Section with Time Series Data."
The Use of Variance Components Model in Pooling Cross-Section and Time Series Data." Econometrica 39(1971):341-58. Marketing Research Corporation of America. Consumer Purchases and Average Prices, selected issues.
Transformations for Estimation of Linear Models with Nested-Error Structure."