1. Intentions-to-Buy and Claimed Brand Usage;Bird M.;Journal of the Operational Research Society
2. Progress on a Simplified Model of Stationary Purchasing Behaviour;Chatfield C.;Journal of the Royal Statistical Society. Series A (General)
3. THE UNBIASED ESTIMATION OF HETEROGENEOUS ERROR VARIANCES;EHRENBERG A. S. C.;Biometrika
4. Estimation of Heterogeneous Error Variances;EHRENBERG A. S. C.;Nature
5. The Elements of Lawlike Relationships;Ehrenberg A. S. C.;Journal of the Royal Statistical Society. Series A (General)