Acta Mathematica Sinica, English Series
Acta Mathematica Sinica, English Series > 2004 > 20 > 3 > 551-556
Acta Mathematica Sinica, English Series > 2004 > 20 > 3 > 415-422
Acta Mathematica Sinica, English Series > 2004 > 20 > 3 > 499-506
Acta Mathematica Sinica, English Series > 2004 > 20 > 3 > 385-404
Acta Mathematica Sinica, English Series > 2004 > 20 > 3 > 441-452
Acta Mathematica Sinica, English Series > 2004 > 20 > 3 > 533-542
Acta Mathematica Sinica, English Series > 2004 > 20 > 3 > 557-568