"All-Magnetic Logic". Timeline of Innovations. SRI International. Retrieved 2013-07-01. http://www.sri.com/work/timeline-innovation/timeline.php?timeline=computing-digital#&innovation=all-magnetic-logic-computer
MAGNETIC CORES - PART I - PROPERTIES - Department of Defense 1962 - PIN 28374 - PROPERTIES OF MAGNETIC CORES AND THEIR APPLICATION IN DATA PROCESSING SYSTEM; HOW INFORMATION IS STORED AND TRANSFERRED FROM ONE CORE TO ANOTHER.
US2729755A, Steagall, William F., "Bistable device", issued 1956-01-03
https://patents.google.com/patent/US2729755
"All-Magnetic Logic". Timeline of Innovations. SRI International. Retrieved 2013-07-01. http://www.sri.com/work/timeline-innovation/timeline.php?timeline=computing-digital#&innovation=all-magnetic-logic-computer