Valchev T.2024-07-102024-07-102024-07-102024-07-102015-05-260375-960110.1016/j.physleta.2015.05.024SCOPUS_ID:84930226103https://rlib.uctm.edu/handle/123456789/336We propose a generalization of the notion of reduction group which provides group-theoretical tools to study in a uniform way certain classes of nonlocal S-integrable equations like Ablowitz-Musslimani's nonlocal Schrödinger equation. Another benefit of the generalization to be presented here is that it supplies us with a systematic approach to construct solutions to S-integrable equations with prescribed symmetries.enArticle