DOI : http://dx.doi.org/10.46889/JDR.2020.1301
DOI : http://dx.doi.org/10.46889/JDR.2020.1302
DOI : http://dx.doi.org/10.46889/JDR.2020.1303
DOI : http://dx.doi.org/10.46889/JDR.2020.1304
DOI : http://dx.doi.org/10.46889/JDR.2020.1305