Loet Leydesdorff & Helen Lawton Smith, (under review).
Triple, Quadruple, and Higher-Order Helices:
Historical Phenomena and (Neo-)Evolutionary Models.
at https://papers.ssrn.com/sol3/papers.cfm?abstract_id=3817410
Loet Leydesdorff
** apologies for cross-postings
Professor emeritus, University of Amsterdam
Amsterdam School of Communication Research (ASCoR)
loet@leydesdorff.net ;
http://www.leydesdorff.net/
"The Evolutionary Dynamics of Discursive Knowledge" at
https://link.springer.com/book/10.1007%2F978-3-030-59951-5 (Open Access)
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