Millman, S. (1983). A history of engineering and science in the bell system: Physical Sciences (1925-1980). The United States of America: AT&T Bell Laboratories.

Millman, S. A History of Engineering and Science in the Bell System: Physical Sciences (1925-1980). The United States of America: AT&T Bell Laboratories, 1983.

Millman, S. A History of Engineering and Science in the Bell System: Physical Sciences (1925-1980). The United States of America: AT&T Bell Laboratories, 1983.