@article{DBLP:journals/sLogica/Hajek01,
author = {Petr H{\'a}jek},
title = {Fuzzy Logic and Arithmetical Hierarchy III},
journal = {Studia Logica},
volume = {68},
number = {1},
year = {2001},
pages = {129-142},
ee = {http://dx.doi.org/10.1023/A:1011906423560},
bibsource = {DBLP, http://dblp.uni-trier.de}
}