The article “A Unified Approach to Disjoining Pressure in Liquid and Vapor Interlayer within the Framework of the Density Functional Theory,” written by A.K. Shchekin, L.A. Gosteva, T.S. Lebedeva, and D.V. Tat’yanenko, was originally published electronically in Springer-Link on 16 April 2021 without Open Access. After publication in volume 83, issue 2, pages 263-269 the authors decided to make the article an Open Access publication. Therefore, the copyright of the article has been changed to