1. Impact of public R&D financing on private R&D: Does financial constraint matter?;Ali-Yrkko;ETLA Discussion Papers, The Research Institute of the Finnish Economy (ETLA), No. 943,2004
2. June. Innovation and company value: evidence from the Baltic countries;Berzkalne;Regional Formation and Development Studies,2012
3. Utilizing the balanced scorecard for R&D performance measurement;Bremser;R&D Management,2004
4. The stock market valuation of research and development expenditures;Chan;The Journal of Finance,2001