TY - JOUR AU - TI - Uncertain Imitability: An Analysis of Interfirm Differences in Efficiency under Competition JF - The Bell Journal of Economics DO - 10.2307/3003464 DA - 1982-01-01 UR - https://www.deepdyve.com/lp/crossref/uncertain-imitability-an-analysis-of-interfirm-differences-in-c0teCqu3qe SP - 418 VL - 13 IS - 2 DP - DeepDyve ER -