1. Renormalization techniques and mean-square averaging—I: Deterministic equations;Bellman,1961
2. Perturbation techniques;Bellman,1962
3. On new and direct computational approaches to some mathematical models of turbulence;Bellman;Quart. Appl. Math.,1965
4. Perturbation Techniques in Mathematics, Physics and Engineering;Bellman,1964
5. Branching Processes;Harris,1964