"The Effect of Variety Seeking Behavior on Optimal Product Positioning."

David C. Schmittlein and Emine Sarigollu.

"A Generalized NBD Regression."

David C. ​Schmittlein and Jihho Kim.

"Counting Your Customers: Who Are They and What Will They Do Next?"

Schmittlein, David C., Donald G. Morrison and Richard Colombo. Management Science Vol. 33, No. 1 (1987): 1-24.

"Which Preference Distributions Lead to Luce's Choice Axiom?"

David C. ​Schmittlein.

"Is the Customer Still Active?"

Schmittein, David C. and Donald G. Morrison. The American Statistician Vol. 39, No. 4 (1985): 291-295.

"Why Does the NBD Model Work? Robustness in Representing Product Purchases, Brand Purchases and Imperfectly Recorded Purchases."

Schmittlein, David C., Albert C. Bemmaor and Donald G. Morrison. Marketing Science Vol. 4, No. 3 (1985): 255-266.