Li, A.P., Zeng, C., Benthem, K.V., Chisholm, M.F., Shen, J., Nageswara Rao, S.V.S., Dixit, S.K., Feldman, L.C., Petukhov, A.G., Foygel, M. and Weitering, H.H. (2007) Dopant segregation and giant magnetoresistance in manganese-doped germanium. Physical Review B, 75, Article ID: 201201.