TY-JOURAU-CharkaniME.AU-LahlouOPY-2003DA-1900/01/01TI-degind标准与单生性SP-157836VL-2003AB-SN-0161-1712UR-https://doi.org/101155/S0161171203211534DO-101155/S0161171201211534S0115S01611712114JF-国际数学学杂志PB-Hindawi发布公司KW-ER