No.Ref: H.F.TAN.1448 ISSN:
No.Ref: IQ090134 ISSN:
No.Ref: AW070268 ISSN: 97-41868
No.Ref: YY015176 ISSN: D203.H36
No.Ref: SG180452 ISSN:
No.Ref: FT090049 ISSN: 98-31938
No.Ref: SG180038 ISSN:
No.Ref: IQ080434 ISSN: 92-33491
No.Ref: NW110750 ISSN: 99-34451
No.Ref: WA101300 ISSN: 2006046657