Stéphane Le Roux, Martin Ziegler. Singular coverings and non-uniform notions of closed set computability. Math. Log. Q., 54(5):545-560, 2008. [doi]
@article{RouxZ08-0,
title = {Singular coverings and non-uniform notions of closed set computability},
author = {Stéphane Le Roux and Martin Ziegler},
year = {2008},
doi = {10.1002/malq.200610058},
url = {http://dx.doi.org/10.1002/malq.200610058},
researchr = {https://researchr.org/publication/RouxZ08-0},
cites = {0},
citedby = {0},
journal = {Math. Log. Q.},
volume = {54},
number = {5},
pages = {545-560},
}