Interactive Overlay Maps for US Patent (USPTO) Data Based on International Patent Classifications (IPC) - Loet Leydesdorff; Duncan Kushnir; Ismael Ràfols (CoRR, 2012)

Interactive overlay maps for US patent (USPTO) data based on International Patent Classification (IPC). - Loet Leydesdorff; Duncan Kushnir; Ismael Ràfols (Scientometrics, 2014)

The Globalization of Academic Entrepreneurship? The Recent Growth (2009-2014) in University Patenting Decomposed. - Loet Leydesdorff; Henry Etzkowitz; Duncan Kushnir (CoRR, 2015)

Economic and Technological Complexity: A Model Study of Indicators of Knowledge-based Innovation Systems. - Inga A. Ivanova; Øivind Strand; Duncan Kushnir; Loet Leydesdorff (CoRR, 2016)