Armin Hemmerling. Approximate decidability in euclidean spaces. Math. Log. Q., 49(1):34-56, 2003. [doi]
@article{Hemmerling03,
title = {Approximate decidability in euclidean spaces},
author = {Armin Hemmerling},
year = {2003},
doi = {10.1002/malq.200310003},
url = {http://dx.doi.org/10.1002/malq.200310003},
researchr = {https://researchr.org/publication/Hemmerling03},
cites = {0},
citedby = {0},
journal = {Math. Log. Q.},
volume = {49},
number = {1},
pages = {34-56},
}