All articles in this issue (5 articles) were authored / co-authored by 21 authors from 4 countries (  Indonesia, Turkey, Pakistan, and  India).

All articles in this issue (5 articles) were authored/co-authored by 25 authors from 3 countries (  Indonesia, Croatioa, and  Ukraine ).

All articles in this issue (5 articles) were authored/co-authored by 24 authors from 2 countries (  Indonesia, and  Iraq ).

All articles in this issue (5 articles) were authored/co-authored by 19 authors from 4 countries (  Brazil,  Indonesia,  Malaysia and  Iraq ).

All articles in this issue (5 articles) were authored/co-authored by 15 authors from 2 countries (  India and  Indonesia ).

All articles in this issue (5 articles) were authored/co-authored by 24 authors from 3 countries (  Bangladesh,  Indonesia and  China ).

All articles in this issue (5 articles) were authored/co-authored by 19 authors from 3 countries (  India,  Indonesia,  Japan, and  Taiwan).