Acta Mathematica Scientia
Acta Mathematica Scientia > 2018 > 38 > 2 > 391-418
Acta Mathematica Scientia > 2018 > 38 > 2 > 673-680
Acta Mathematica Scientia > 2018 > 38 > 5 > 1443-1467
Acta Mathematica Scientia > 2018 > 38 > 5 > 1583-1590
Acta Mathematica Scientia > 2018 > 38 > 2 > 391-418
Acta Mathematica Scientia > 2018 > 38 > 2 > 673-680
Acta Mathematica Scientia > 2018 > 38 > 5 > 1443-1467
Acta Mathematica Scientia > 2018 > 38 > 5 > 1583-1590