@article{gledocs_11858_00-1735-0000-0001-32D6-7, author = {Xu, Guochang}, title = {MFGsoft}, year = {2004}, publisher = {GFZ, Helmholtz-Zentrum}, note = { \url {http://hdl.handle.net/11858/00-1735-0000-0001-32D6-7}}, }