Tetsuo Tomiyama, Paul J. W. ten Hagen. Representing knowledge in two distinct descriptions: Extensional vs. intensional. AI in Engineering, 5(1):23-32, 1990. [doi]
@article{TomiyamaH90,
title = {Representing knowledge in two distinct descriptions: Extensional vs. intensional},
author = {Tetsuo Tomiyama and Paul J. W. ten Hagen},
year = {1990},
doi = {10.1016/0954-1810(90)90032-Y},
url = {http://dx.doi.org/10.1016/0954-1810(90)90032-Y},
researchr = {https://researchr.org/publication/TomiyamaH90},
cites = {0},
citedby = {0},
journal = {AI in Engineering},
volume = {5},
number = {1},
pages = {23-32},
}