Douglas S. Bridges. H). Math. Log. Q., 24(31-36):493-494, 1978. [doi]
@article{Bridges78a,
title = {H)},
author = {Douglas S. Bridges},
year = {1978},
doi = {10.1002/malq.19780243104},
url = {http://dx.doi.org/10.1002/malq.19780243104},
researchr = {https://researchr.org/publication/Bridges78a},
cites = {0},
citedby = {0},
journal = {Math. Log. Q.},
volume = {24},
number = {31-36},
pages = {493-494},
}