Search results for: Syawaludin A. Harahap
World Scientific News > 2021 > 151 > 95-109
World News of Natural Sciences > 2021 > 34 > 113-126
World Scientific News > 2020 > 146 > 152-169
World Scientific News > 2019 > 138 > 2 > 79-92
World Scientific News > 2021 > 151 > 95-109
World News of Natural Sciences > 2021 > 34 > 113-126
World Scientific News > 2020 > 146 > 152-169
World Scientific News > 2019 > 138 > 2 > 79-92