1. The solution of the multigroup neutron transport equation using spherical harmonics;Fletcher;Nucl. Sci. Engng.,1983
2. A users guide to the MARC/PN computer code;Fletcher,1976
3. CTD. A computer program to solve the three dimensional multigroup diffusion equation;Fletcher,1973
4. Further work on the solution of the multigroup transport equation using spherical harmonics;Fletcher,1976
5. A finite element option for the MARC/PN transport/diffusion theory code;Fletcher,1980