Article

Lawton Smith, Helen and Leydesdorff, L. (2022) Have quadruple and quintuple helices emerged? Metaphors, project titles, and empirical research. Triple Helix 9 (2), pp. 174-183. ISSN 2197-1927.

Leydesdorff, L. and Lawton Smith, Helen (2022) Triple, quadruple, and higher-order helices: historical phenomena and (neo-)evolutionary models. Triple Helix 9 (1), pp. 6-31. ISSN 2197-1927.

Lawton Smith, Helen and Leydesdorff, L. (2014) The Triple Helix in the context of global change: dynamics and challenges. Prometheus 32 (4), pp. 321-336. ISSN 0810-9028.