Wiebe van der Hoek. Qualitative Modalities. In SCAI. pages 322-327, 1991.
@inproceedings{Hoek91:0,
title = {Qualitative Modalities},
author = {Wiebe van der Hoek},
year = {1991},
researchr = {https://researchr.org/publication/Hoek91%3A0},
cites = {0},
citedby = {0},
pages = {322-327},
booktitle = {SCAI},
}