This issue has been available online since 29 April 2024 for the regular issue of April 2024. All articles in this issue (5 original research articles) were authored/co-authored by 10 authors from 5 affiliations and one country (Indonesia).

This issue has been available online since 19 November 2023 for the regular issue of October 2023. All articles in this issue (5 original research articles) were authored/co-authored by 8 authors from 6 affiliations and four countries (Indonesia, United Kingdom, Malaysia, and Austria).

This issue has been available online since 26 March 2023 for the regular issue of April 2023. All articles in this issue (10 original research articles) were authored/co-authored by 14 authors from 4 affiliations and one country (Indonesia).

This issue has been available online since 12 October 2022 for the regular issue of October 2022. All articles in this issue (5 original research articles) were authored/co-authored by 15 authors from 5 affiliations and one country (Indonesia).

This issue has been available online since 12 April 2022 for the regular issue of April 2022. All articles in this issue (9 original research articles) were authored/co-authored by 13 authors from 4 affiliations and one country (Indonesia).

This issue has been available online since 20 November 2021 for the regular issue of October 2021. All articles in this issue (10 original research articles) were authored/co-authored by 22 authors from 7 affiliations and one country (Indonesia).

This issue has been available online since 9 August 2021 for the regular issue of April 2021. All articles in this issue (10 original research articles) were authored/co-authored by 18 authors from 7 affiliations and one country (Indonesia).

This issue has been available online since 8 December 2020 for the regular issue of October 2020. All articles in this issue (9 original research articles) were authored/co-authored by 20 authors from 7 affiliations and two countries (Indonesia and Uzbekistan).

This issue has been available online since 30 June 2020 for the regular issue of April 2020. All articles in this issue (10 original research articles) were authored/co-authored by 19 authors from 5 affiliations and two countries (Indonesia and Lao People's Democratic Republic).