Nuel Belnap. Truth Values, Neither-true-nor-false, and Supervaluations. Studia Logica, 91(3):305-334, 2009. [doi]
@article{Belnap09,
title = {Truth Values, Neither-true-nor-false, and Supervaluations},
author = {Nuel Belnap},
year = {2009},
doi = {10.1007/s11225-009-9177-2},
url = {http://dx.doi.org/10.1007/s11225-009-9177-2},
researchr = {https://researchr.org/publication/Belnap09},
cites = {0},
citedby = {0},
journal = {Studia Logica},
volume = {91},
number = {3},
pages = {305-334},
}