Articles by others on the same topic
With Charles Kittel, he calculated conduction-electron-mediated exchange between nuclear magnetic moments. His later research included neutron stars. Columbia's account of his career also recalls his enthusiasm for order-of-magnitude teaching.[ref]
https://fas.columbia.edu/news/memoriam-professor-mal-ruderman. Columbia University, In Memoriam: Professor Mal Ruderman, 25 July 2024
