About this article
Article Category: Retraction Note
Published Online: May 25, 2020
Page range: 521 - 522
DOI: https://doi.org/10.2478/amns.2020.1.00049
Keywords
© 2020, published by Sciendo
This work is licensed under the Creative Commons Attribution 4.0 International License.
Applied Mathematics and Nonlinear Sciences DOI: 10.2478/AMNS.2020.1.00020