The Editors-in-Chief have retracted this article  because its results are invalid. It also shows considerable overlap with an article by Lu and Sun  that was simultaneously under consideration. Additionally, the article shows evidence of authorship manipulation. The authors have not responded to any correspondence regarding this retraction.
Tan, Y., Ding, W., Wang, Y., et al.: Normal families of solutions for modified equilibrium equations and their applications. Bound. Value Probl. 2017, 176 (2017). https://doi.org/10.1186/s13661-017-0906-6
Lu, Y., Sun, J.: A new technique to study the boundary behaviors of superharmonic multifunctions and their application. Bound. Value Probl. 2017, 144 (2017). https://doi.org/10.1186/s13661-017-0874-x
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Tan, Y., Ding, W., Wang, Y. et al. Retraction Note: Normal families of solutions for modified equilibrium equations and their applications. Bound Value Probl 2020, 126 (2020). https://doi.org/10.1186/s13661-020-01428-y