This issue has been available online since 13rd February 2017 for the regular issue of April 2017. All articles in this issue (16 original research articles) were authored/co-authored by 63 authors from 9 countries (Indonesia, Malaysia, Iran, China, India, South Africa, Saudi Arabia, Brunei Darussalam, and Pakistan).
Biuck Habibi, Serveh Ghaderi
Yasukazu Kobayashi, Riki Hikosaka
Muhammad Nur, Ade Ika Susan, Zaenul Muhlisin, Fajar Arianto, Andi Wibowo Kinandana, Iis Nurhasanah, Sumariyah Sumariyah, Pratama Jujur Wibawa, Gunawan Gunawan, Anwar Usman
Ganesh Trambakrao Pawar, Sachin Pandit Gadekar, Balasaheb R. Arbad, Machhindra Karbhari Lande
Jidon Adrian Janaun, Tan Jaik Mey, Awang Bono, Duduku Krishnaiah
Sepehr Sadighi, Seyed Kamal Masoudian Targhi
Mukhamad Nurhadi
A. B. Makama, Ali Salmiaton, Elias B. Saion, T.S.Y. Choong, N. Abdullah
Faten Hameed Kamil, Ali Salmiaton, Raja Mohamad Hafriz Raja Shahruzzaman, R. Omar, Abdulkareem Ghassan Alsultsan
Ke-ying Cai, Yu-Sheng Liu, Yang Xu, Huimin Zhou, Lingxia Zhang, Yao Cui
Seyed Ali Hosseini, Ramin Saeedi
Niels T.J. Luchters, J. V. Fletcher, S. J. Roberts, J. C. Q. Fletcher
Wang Li-Hua, Liang Lei, Wang Xin
Dhaifallah Aldhayan, Ahmed Aouissi
Zahoor Ahmad, Maryam Maqsood, Mazher Mehmood, Mirza Jameel Ahmad, Muhammad Aziz Choudhary
Ganesh Chandra Dhal, Subhashish Dey, Ram Prasad, Devendra Mohan