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Retraction Note to: Normal families and asymptotic behaviors for solutions of certain Laplace equations
Advances in Difference Equations volume 2020, Article number: 56 (2020)
The Editors-in-Chief have retracted this article  because it shows significant overlap with an article by different authors that was simultaneously under consideration with another journal  and with a previously published article by another group of different authors . In addition, the identity of the corresponding author could not be verified: Roskilde University confirmed that Beatriz Ychussie was never affiliated to this institution. The authors have not responded to any correspondence about this retraction.
Yan, Z., Ychussie, B.: Normal families and asymptotic behaviors for solutions of certain Laplace equations. Adv. Differ. Equ. 2015, 226 (2015). https://doi.org/10.1186/s13662-015-0564-x
Sun, J., He, B., Peixoto-de-Büyükkurt, C.: Growth properties at infinity for solutions of modified Laplace equations. J. Inequal. Appl. 2015, 256 (2015). https://doi.org/10.1186/s13660-015-0777-2
Qi, J., Zhu, T.: Some normal criteria about shared values with their multiplicity zeros. Abstr. Appl. Anal. 2010, Article ID 147878 (2010). https://doi.org/10.1155/2010/147878
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Yan, Z., Ychussie, B. Retraction Note to: Normal families and asymptotic behaviors for solutions of certain Laplace equations. Adv Differ Equ 2020, 56 (2020). https://doi.org/10.1186/s13662-020-2515-4