共 4 条
- [1] An unsolvable problem of elementary number theory [J]. AMERICAN JOURNAL OF MATHEMATICS, 1936, 58 : 345 - 363
- [2] Church Alonzo, 1943, J SYMBOLIC LOGIC, V8, P50, DOI [10.2307/2268006, DOI 10.2307/2268006]
- [3] Post E.L., 1944, B AM MATH SOC, V50, P284, DOI [DOI 10.1090/S0002-9904-1944-08111-1, 10.1090/S0002-9904-1944-08111-1]