Khanduri, G.M., and B.S. Panwar. “Silicon-Germanium Single-Heterojunction Bipolar Transistor”. Defence Science Journal 56, no. 2 (April 1, 2006): 289-294. Accessed March 29, 2024. https://publications.drdo.gov.in/ojs/index.php/dsj/article/view/1891.