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Correction: Theoretical study of the effect of ports in the formation of city systems
Journal of Shipping and Trade volume 7, Article number: 18 (2022)
Correction to: Journal of Shipping and Trade 2022, 7(1):16 https://doi.org/10.1186/s41072-022-00117-6
Following publication of the original article [1], some numbers and letters were wrongly placed in the equations (1) and (2) under the heading Krugman’s formulation due to typesetting errors.
The equations currently show:
The equations should show:
The original article [1] has been corrected.
Reference
Lugo I, Martínez-Mekler G (2022) Theoretical study of the effect of ports in the formation of city systems. J Shipp Trade 7:16. https://doi.org/10.1186/s41072-022-00117-6
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Lugo, I., Martínez-Mekler, G. Correction: Theoretical study of the effect of ports in the formation of city systems. J. shipp. trd. 7, 18 (2022). https://doi.org/10.1186/s41072-022-00118-5
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DOI: https://doi.org/10.1186/s41072-022-00118-5