This issue is available online on March 9, 2022. All articles in this issue, comprising six papers, were authored/co-authored by 16 authors from Indonesia and South Africa. 

This issue is available online on September 9, 2022. All articles in this issue consisting of 6 papers were authored/co-authored by 19 authors from 6 countries, namely Indonesia, Japan, Vietnam, Canada, the United States, and Norway.

This issue is available online on March 7, 2022. All articles in this issue comprising six papers were authored/co-authored by 24 authors from 7 countries: Indonesia, the United States, Brunei Darussalam, South Africa, Spain, China, and the United Kingdom.