1. Radiative Transfer;Chandrasekhar,1960
2. Invariant Imbedding and Radiative Transfer in Slabs of Finite Thickness;Bellman,1963
3. Inverse Problems in Radiative Transfer: Layered Media;Bellman;Icarus,1965
4. Invariant Imbedding and TimeDependent Transport Processes;Bellman,1964
5. Quasilinearization and Nonlinear Boundary Value Problems;Bellman,1965