Jayant Kalagnanam, Herbert A. Simon, Yumi Iwasaki. The Mathematical Bases for Qualitative Reasoning. IEEE Intelligent Systems, 6(2):11-19, 1991. [doi]
@article{KalagnanamSI91,
title = {The Mathematical Bases for Qualitative Reasoning},
author = {Jayant Kalagnanam and Herbert A. Simon and Yumi Iwasaki},
year = {1991},
url = {http://csdl.computer.org/comp/mags/ex/1991/02/x2011abs.htm},
researchr = {https://researchr.org/publication/KalagnanamSI91},
cites = {0},
citedby = {0},
journal = {IEEE Intelligent Systems},
volume = {6},
number = {2},
pages = {11-19},
}