1 “... are very popular trademarks of the Frontiers Journals Series: they are collections of at least ten articles...”

2 “... "Applied and Computational Mathematics for Digital Environments" of the MDPI Mathematics journal...”

3 “...The Special Issue "Game Theory" of the journal Mathematics provides a collection of papers...”

4 “.... The articles are based on the latest contribution of this journal's Special Issues in the 21st conference...”

5 “... "Numerical Computation, Data Analysis and Software in Mathematics and Engineering" of the MDPI journal...”

6 “... Mathematics journal, entitled "Fuzzy Logic and Soft Computing - Dedicated to the Centenary of the Birth...”