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Patent analysis of company's technology strength
Haupt, Reinhard, (2004)
Patent analysis of a company's technology strength
Haupt, Reinhard, (2005)
What do technology shocks do?
Shea, John, (1999)
Assessing technological competencies
Narin, Francis, (2006)
Narin, Francis, (2000)
Citation frequency and the value of patented innovation
Harhoff, Dietmar, (1997)