Seymour Ginsburg, Gene F. Rose. Some Recursively Unsolvable Problems in ALGOL-Like Languages. Journal of the ACM, 10(1):29-47, 1963. [doi]
@article{GinsburgR63,
title = {Some Recursively Unsolvable Problems in ALGOL-Like Languages},
author = {Seymour Ginsburg and Gene F. Rose},
year = {1963},
doi = {10.1145/321150.321153},
url = {http://doi.acm.org/10.1145/321150.321153},
researchr = {https://researchr.org/publication/GinsburgR63},
cites = {0},
citedby = {0},
journal = {Journal of the ACM},
volume = {10},
number = {1},
pages = {29-47},
}