1. Bartos, R. (1980, “Over 49: the invisible consumer market”,Harvard Business Review, Vol. 58, January/February, pp. 140‐8.
2. Erratum
3. A Paradigm for Developing Better Measures of Marketing Constructs
4. Gray Marketing
5. Darden, W.R. and Ashton, D. (1974‐75, “Psychographic profiles of patronage preference groups”,Journal of Retailing, Vol. 50, Winter, pp. 99‐112.