Vo Thi Kim Loan, MSc. Faculty of Geology, HCM City University of Natural Sciences, 227 Nguyen Van Cu Dist.5, HCM City,VN

Tel: (84-8) 8 355.271         Fax: (84-8) 8 350 096         E-mail:vtkloan@hcmuns.edu.vn

Assoc. Prof Huynh Thi Minh Hang                 E-mail:minhhang@hcmier.edu.vn

Tran Phu Hung, MSc.                                       E-mail: tphung@hcmuns.edu.vn