Elena Tsiporkova, Bernard De Baets. A General Framework for Upper and Lower Possibilities and Necessities. International Journal of Uncertainty, Fuzziness and Knowledge-Based Systems, 6(1):1-34, 1998. [doi]
@article{TsiporkovaB98,
title = {A General Framework for Upper and Lower Possibilities and Necessities},
author = {Elena Tsiporkova and Bernard De Baets},
year = {1998},
doi = {10.1142/S0218488598000021},
url = {http://dx.doi.org/10.1142/S0218488598000021},
researchr = {https://researchr.org/publication/TsiporkovaB98},
cites = {0},
citedby = {0},
journal = {International Journal of Uncertainty, Fuzziness and Knowledge-Based Systems},
volume = {6},
number = {1},
pages = {1-34},
}