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The Editor-in-Chief of Applied Physics A is issuing an editorial expression of concern to alert readers that this article [1] shows substantial indication of irregularities in authorship during the publication process. This article contains overlap with the following articles amongst others [2,3,4]. All authors declare that they do not agree with the expression of concern.
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Jović, S., Radović, A., Šarkoćević, Ž. et al. Expression of Concern: Estimation of the laser cutting operating cost by support vector regression methodology. Appl. Phys. A 125, 335 (2019). https://doi.org/10.1007/s00339-019-2423-1
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DOI: https://doi.org/10.1007/s00339-019-2423-1