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Retraction notice to “The role of corporate technology strategy and patent portfolios in low-, medium- and high-technology firms” [Res. Policy 38 (2009) 559–569] and “Determinants of proactive and reactive technology licensing: A contingency perspective” [Res. Policy 39 (2010) 55–66]

Ulrich Lichtenthaler

Research Policy · 2012 · Volume 41 · Issue 8

DOI: 10.1016/j.respol.2012.07.005

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