1. A. Schüppen, A. Gruhle, U. Erben, H. Kibbel and U. König, in: Tech. Digest DRC 94, p. IIIA-2
2. E. Crabbe, B. Meyerson, J. Stork and D. Harame, in: Tech. Digest IEDM 93, p. 83
3. D. Harame, J. Stork, B. Meyerson, K. Hsu, K. Jenkins, J. Cressler, P. Restle, E. Crabbe, S. Subbanna, T. Tice, B. Scharf and J. Yasaitis, in: Tech. Digest IEDM 93, p. 71
4. Bandgap and transport properties of Si/sub 1-x/Ge/sub x/ by analysis of nearly ideal Si/Si/sub 1-x/Ge/sub x//Si heterojunction bipolar transistors
5. Si/siGe heterojunction bipolar transistor with base doping highly exceeding emitter doping concentration