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Retraction Note: Fixed point theorems for solutions of the stationary Schrödinger equation on cones
Fixed Point Theory and Applications volume 2020, Article number: 1 (2020)
The Editors-in-Chief have retracted this article  because the results presented are invalid. The article also shows significant overlap with a number of previously published articles [2–5] and evidence of both peer review and authorship manipulation.
The authors have not responded to any correspondence regarding this retraction.
Xue, G., Yuzbasi, E.: Fixed Point Theory Appl. 2015, 34 (2015). https://doi.org/10.1186/s13663-015-0275-8
Qiao, L., Deng, G.-T.: Taiwan. J. Math. 15(5), 2213–2233 (2011). https://projecteuclid.org/euclid.twjm/1500406431
Qiao, L., Deng, G.: Integral representation for the solution of the stationary Schrödinger equation in a cone. Math. Nachr. 285, 2029–2038 (2012). https://doi.org/10.1002/mana.201100251
Qiao, L., Su, B.-Y., Deng, G.-T.: Taiwan. J. Math. 16(5), 1733–1748 (2012). https://projecteuclid.org/euclid.twjm/1500406793
Li, Z., Ychussie, B.: Fixed Point Theory Appl. 2015, 89 (2015). https://doi.org/10.1186/s13663-015-0342-1
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Xue, G., Yuzbasi, E. Retraction Note: Fixed point theorems for solutions of the stationary Schrödinger equation on cones. Fixed Point Theory Appl 2020, 1 (2020). https://doi.org/10.1186/s13663-020-0669-0