1 Retraction note
The Editors-in-Chief have retracted this article [1] because it significantly overlaps with a previously published article by Pang et al. [2]. The article also shows evidence of authorship manipulation. The identity of the corresponding author could not be verified; the University of Ioannina have confirmed that Mohamed Vetro has not been affiliated with their institution. The authors have not responded to correspondence regarding this retraction.
References
Li, Z., Vetro, M.: Levin’s type boundary behaviors for functions harmonic and admitting certain lower bounds. Bound. Value Probl. 2015, 159 (2015). https://doi.org/10.1186/s13661-015-0421-6
Pang, S., Ychussie, B.: RETRACTED ARTICLE: Matsaev type inequalities on smooth cones. J. Inequal. Appl. 2015, 108 (2015). https://doi.org/10.1186/s13660-015-0621-8
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Li, Z., Vetro, M. Retraction Note: Levin’s type boundary behaviors for functions harmonic and admitting certain lower bounds. Bound Value Probl 2020, 78 (2020). https://doi.org/10.1186/s13661-020-01376-7
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DOI: https://doi.org/10.1186/s13661-020-01376-7