My article is in the last issue of the Journal of Mathematical Economics and Finance, The Buckingham’s π Theorem: Consequences for the Price Theory, Vol 9 No 1 (2023): JMEF, Volume IX, Issue 1(16), Summer 2023, was assigned DOI number https://doi.org/10.14505/jmef.v9.1(16).02. However the Research Gate informed me, that this number belongs to another item. The Journal confirmed that the number is unique and belongs to my paper. So please inform me how to proceed.