Electron impact-ionization effects in UHV/CVD SiGe HBT's in the temperature range of 300 to 83 K G. Niu, U. Gogineni et J.D. Cressler J. Phys. IV France, 08 PR3 (1998) Pr3-103-Pr3-107 DOI: 10.1051/jp4:1998324