1. R. F. Soohoo,Theory and Application of Ferrites(Prentice-Hall, Inc., Englewood Cliffs, New Jersey, 1960), p. 212.
2. R. F. Soohoo, “Relaxation of inhomogeneously excited spin systems,” presented at the International Conference on Quantum Electronics, March 23–25, 1961, Berkeley, California; Lincoln Laboratory Group Report 53G-0057.
3. R. F. Soohoo, Solid State Research Quarterly Progress Report, Lincoln Laboratory, MIT (April 15, 1961), p. 63.