1 Subjects: “...journals...”

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

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

4 “...This Special Issue of the journal Axioms collects submissions in which the authors report...”

5 “...This Special Issue of the journal Axioms collects submissions in which the authors report...”

6 “... of the journal Universe in memory of outstanding astrophysicist Prof. Dr. Yuri N. Gnedin, who organized and led...”

7 “... journal. This reprint includes 17 research articles covering different aspects of Net-Zero/Positive Energy...”

8 “...This Special Issue celebrates the opening of a new section of the journal Foundation: Physical...”

9 “...This reprint brings together fifteen articles published in the Special Issue of the journal...”

10 “...This reprint brings together fifteen articles published in the Special Issue of the journal...”