TY - RPRT TI - High Electron Mobility SiGe/Si Transistor Structures on Sapphire Substrates AU - Alterovitz, Samuel A. AU - Mueller, Carl H. AU - Croke, Edward T. AU - Ponchak, George E. PY - 2004 UR - https://ntrs.nasa.gov/citations/20050031071 ID - 20050031071 ER -