1 Correction to: Mathematical Methods of Operations Research (2020) 92:401–433 https://doi.org/10.1007/s00186-020-00718-6

The article “Solutions for subset sum problems with special digraph constraints”, https://doi.org/10.1007/s00186-020-00718-6, written by Frank Gurski, Dominique Komander and Carolin Rehs was originally published electronically on the publisher’s internet portal on 3 July 2020 without open access. With the author(s)’ decision to opt for Open Choice the copyright of the article changed on [signed date in the bottom of the LtP] to © [copyright holder name in OA Team’s request] [year of online publication] and the article is forthwith distributed under a Creative Commons Attribution [… continue with the appropriate plain license text given in Creative Commons and OGL Licence Text for Open Access Content] [funding information].