Correction to: Optimization Letters https://doi.org/10.1007/s11590-020-01661-5
In the original publication of the article, the second author was missed to be added.
The second author details are as follows:
Laura Scrimali, University of Catania, Catania, Italy.
The original article has been corrected.
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Daniele, P., Scrimali, L. Correction to: Preface. Optim Lett 15, 2345 (2021). https://doi.org/10.1007/s11590-020-01676-y