"Existence and Uniqueness of Price Equilibria in Defender."

Hauser, John R., and Birger Wernerfelt. Marketing Science Vol. 7, No. 1 (1988): 92-93.

"Diversification, Ricardian Rents, and Tobin's q."

Wernerfelt, Birger, Cynthia A. Montgomery. RAND Journal of Economics Vol. 19, No. 4 (1988): 623-632.

"Tobin's q and the Importance of Focus in Firm Performance."

Montgomery, Cynthia A. and Birger Wernerfelt. The American Economic Review Vol. 78, No. 1 (1988): 246-250.

"Defensive Marketing Strategy by Customer Complaint Management: A Theoretical Analysis."

Fornell, Claes and Birger Wernerfelt. Journal of Marketing Research Vol. 24, No. 4 (1987): 337-346.

"Competitive Price and Quality Under Asymmetric Information."

Tellis, Gerald J. and Birger Wernerfelt. Marketing Science Vol. 6, No. 3 (1987): 240-253.

"Uniqueness of Nash Equilibrium for Linear-Convex Stochastic Differential Games."

Wernerfelt, Birger. Journal of Optimization Theory and Applications Vol. 53, No. 1 (1987): 133-138.