1. Thermal Reactor Theory;Galanin,1960
2. Minimum critical mass and flat flux;Goertzel;J. Nucl. Energy,1956
3. Horning, W.A., 1954. A summary of small source theory applied to thermal reactors. USAEC General Electric, Report HW-34021.
4. Importance: The Adjoint Function;Lewins,1966
5. The effect of random geometry on the criticality of a multiplying system;Williams;Ann. Nucl. Energy,2000