Nur Khusnussa’adah
Department of Mathematics, FMNS
Universitas Gadjah Mada
Sekip Utara BLS 21 Yogyakarta, Indonesia, 55281
Telp. (+62 274) 552243, Fax. (+62 274) 555131,
Email. nur-khusnus[at]ugm.ac.id
Nur Khusnussa’adah
Department of Mathematics, FMNS
Universitas Gadjah Mada
Sekip Utara BLS 21 Yogyakarta, Indonesia, 55281
Telp. (+62 274) 552243, Fax. (+62 274) 555131,
Email. nur-khusnus[at]ugm.ac.id