| 1969 | ||
|---|---|---|
| 2 | Harvey B. Keynes, James B. Robertson: Generators for Topological Entropy and Expansiveness. Mathematical Systems Theory 3(1): 51-59 (1969) | |
| 1967 | ||
| 1 | Harvey B. Keynes: The Proximal Relation in a Class of Substitution Minimal Sets. Mathematical Systems Theory 1(2): 165-174 (1967) | |
| 1 | James B. Robertson | [2] |