An empirical test of the asymmetric models on innovative activity: who invests more into R&D, the incumbent or the challenger?
Czarnitzki, Dirk
and
Kornelius Kraft
(2004),
An empirical test of the asymmetric models on innovative activity: who invests more into R&D, the incumbent or the challenger?,
Journal of Economic Behavior and Organization (JEBO)
54(2)
, 153-173