Henk Doornbos, Burghard von Karger. On the Union of Well-Founded Relations. Logic Journal of the IGPL, 6(2):195-201, 1998. [doi]
@article{DoornbosK98,
title = {On the Union of Well-Founded Relations},
author = {Henk Doornbos and Burghard von Karger},
year = {1998},
url = {http://www3.oup.co.uk/igpl/Volume_06/Issue_02/#Doornbos},
researchr = {https://researchr.org/publication/DoornbosK98},
cites = {0},
citedby = {0},
journal = {Logic Journal of the IGPL},
volume = {6},
number = {2},
pages = {195-201},
}