2017

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Strategic intelligence on emerging technologies: Scientometric overlay mapping
Daniele Rotolo | Ismael Ràfols | Michael M. Hopkins | Loet Leydesdorff
2017 Volume 68 Issue 1

2014

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Patent overlay mapping: Visualizing technological distance
Luciano Kay | Nils C. Newman | Jan L. Youtie | Alan L. Porter | Ismael Ràfols
2014 Volume 65 Issue 12

2013

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Interactive overlays of journals and the measurement of interdisciplinarity on the basis of aggregated journal-journal citations
Loet Leydesdorff | Ismael Ràfols | Chaomei Chen
2013 Volume 64 Issue 12

2012

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Bibliometric perspectives on medical innovation using the medical subject Headings of PubMed
Loet Leydesdorff | Daniele Rotolo | Ismael Ràfols
2012 Volume 63 Issue 11

2011

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Local emergence and global diffusion of research technologies: An exploration of patterns of network formation
Loet Leydesdorff | Ismael Ràfols
2011 Volume 62 Issue 5

2010

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Science overlay maps: A new tool for research policy and library management
Ismael Ràfols | Alan L. Porter | Loet Leydesdorff
2010 Volume 61 Issue 9

2009

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A global map of science based on the ISI subject categories
Loet Leydesdorff | Ismael Ràfols
2009 Volume 60 Issue 2

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Content-based and algorithmic classifications of journals: Perspectives on the dynamics of scientific communication and indexer effects
Ismael Ràfols | Loet Leydesdorff
2009 Volume 60 Issue 9

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