Vol 37, No 2 (2023): December 2023

Authors diversity: Indonesia, United States, Nigeria, Turkey, and Malaysia.

Vol 37, No 1 (2023): July 2023

Authors diversity: Indonesia, United States, South Africa, Malaysia, India, and Nigeria.

Vol 36, No 2 (2022): December 2022

This issue consists of papers whose authors are from seven different countries: Japan, Indonesia, Nigeria, Uganda, Nigeria, Malaysia, and United Kingdom

Vol 36, No 1 (2022): July 2022

This issue consists of papers whose authors are from six different countries: Nigeria, Japan, Indonesia, Malaysia, Hungary, and Sweden.

Vol 35, No 2 (2021): December 2021

This issue consists of papers whose authors are from three different countries: Indonesia, Japan, and South Africa.

Vol 35, No 1 (2021): July 2021

This issue consists of papers whose authors are from two different countries: Indonesia and Japan.

Vol 34, No 2 (2020): December 2020

This issue consists of papers whose authors are from three different countries: Indonesia, Japan, and France.

Vol 34, No 1 (2020): July 2020

This issue consists of papers whose authors are from two different countries: Indonesia and Malaysia.

Vol 33, No 2 (2019): December 2019

This issue consists of papers whose authors are from two different countries: Indonesia and Japan.

Vol 33, No 1 (2019): July 2019

This issue consists of papers whose authors are from four different countries: Japan, New Zealand, France, and Indonesia

Vol 32, No 2 (2018): December 2018

Vol 32, No 1 (2018): July 2018

Vol 31, No 2 (2017): December 2017

Vol 31, No 1 (2017): July 2017

Vol 30, No 2 (2016): December 2016

Vol 30, No 1 (2016): July 2016

Vol 29, No 2 (2015): December 2015

Vol 29, No 1 (2015): July 2015

Vol 28, No 2 (2014): December 2014

Vol 28, No 1 (2014): July 2014

Vol 27, No 2 (2013): December 2013

Vol 27, No 1 (2013): July 2013

Vol 26, No 2 (2012): December 2012

Vol 26, No 1 (2012): July 2012

Vol 25, No 2 (2011): December 2011