| |
| 1968 | ||
|---|---|---|
| 5 | Ivo Thomas: Replacement in Some Modal Systems. J. Symb. Log. 33(4): 569-570 (1968) | |
| 1964 | ||
| 4 | Ivo Thomas: Ten Modal Models. J. Symb. Log. 29(3): 125-128 (1964) | |
| 1959 | ||
| 3 | Ivo Thomas, Don Orth: Axioms for the "Gergonne"-Relations. J. Symb. Log. 24(4): 305 (1959) | |
| 1958 | ||
| 2 | Ivo Thomas: A 12th Century Paradox of the Infinite. J. Symb. Log. 23(2): 133-134 (1958) | |
| 1957 | ||
| 1 | Ivo Thomas: Eulerian Syllogistic. J. Symb. Log. 22(1): 15-16 (1957) | |
| 1 | Don Orth | [3] |