@incollection(BV.05,
 author       = {B{\v{e}}lohl{\'a}vek, Radim and Vil{\'e}m Vychodil},
 year         = {2005},
 title        = {Fuzzy Equational Logic},
 booktitle    = {Fuzzy Equational Logic},
 series       = {Studies in Fuzziness and Soft Computing},
 volume       = {186},
 publisher    = {Springer Berlin Heidelberg},
 address      = {Berlin, Heidelberg},
 pages        = {139--170},
 doi          = {10.1007/11376422_3},
)
@book(Bel.02,
 author       = {B\v{e}lohl\'{a}vek, Radim},
 year         = {2002},
 title        = {Fuzzy Relational Systems: Foundations and Principles},
 publisher    = {Kluwer Academic Publishers},
 address      = {USA},
 doi          = {10.1007/978-1-4615-0633-1},
)
@article(BK.09,
 author       = {B\v{e}lohl{\'{a}}vek, Radim and Michal Krupka},
 year         = {2009},
 title        = {On Approximate Minimization of Fuzzy Automata},
 journal      = {Journal of Multiple-Valued Logic and Soft Computing},
 volume       = {15},
 number       = {2-3},
 pages        = {125--135},
 doi          = {10.1142/9789812709677_0194},
)
@inproceedings(CSIP.07,
 author       = {Miroslav {\'{C}}iri{\'{c}} and Aleksandar Stamenkovi{\'{c}} and Jelena Ignjatovi{\'{c}} and Tatjana Petkovi{\'{c}}},
 year         = {2007},
 title        = {Factorization of Fuzzy Automata},
 editor       = {Csuhaj-Varj{\'u}, Erzs{\'e}bet and Zolt{\'a}n {\'E}sik},
 booktitle    = {Fundamentals of Computation Theory},
 series       = {Lecture Notes in Computer Science},
 volume       = {4639},
 publisher    = {Springer Berlin Heidelberg},
 address      = {Berlin, Heidelberg},
 pages        = {213--225},
 doi          = {10.1007/978-3-540-74240-1_19},
)
@article(CSIP.10,
 author       = {Miroslav \'{C}iri\'{c} and Aleksandar Stamenkovi\'{c} and Jelena Ignjatovi\'{c} and Tatjana Petkovi\'{c}},
 year         = {2010},
 title        = {Fuzzy relation equations and reduction of fuzzy automata},
 journal      = {Journal of Computer and System Sciences},
 volume       = {76},
 pages        = {609--633},
 doi          = {10.1016/j.jcss.2009.10.015},
)
@article(ICST.15,
 author       = {Jelena Ignjatovi\'{c} and Miroslav \'{C}iri\'{c} and \v{S}e\v{s}elja, Branimir and Tepav\v{c}evi\'{c}, Andreja},
 year         = {2015},
 title        = {Fuzzy relational inequalities and equations, fuzzy quasi-orders, closures and openings of fuzzy sets},
 journal      = {Fuzzy Sets and Systems},
 volume       = {260},
 pages        = {1--24},
 doi          = {10.1016/j.fss.2014.05.006},
)
@article(LQ.15,
 author       = {Lvzhou Li and Daowen Qiu},
 year         = {2015},
 title        = {On the State Minimization of Fuzzy Automata},
 journal      = {IEEE Transactions on Fuzzy Systems},
 volume       = {23},
 number       = {2},
 pages        = {434--443},
 doi          = {10.1109/TFUZZ.2014.2315620},
)
@article(Li.08,
 author       = {Yongming Li},
 year         = {2008},
 title        = {Approximation and robustness of fuzzy finite automata},
 journal      = {International Journal of Approximate Reasoning},
 volume       = {47},
 number       = {2},
 pages        = {247--257},
 doi          = {10.1016/j.ijar.2007.05.004},
)
@inproceedings(MJS.22,
 author       = {Ivana Mici\'{c} and Jan\v{c}i\'{c}, Zorana and Stefan Stanimirovi\'{c}},
 year         = {2022},
 title        = {Computation of solutions to certain nonlinear systems of fuzzy relation inequations},
 editor       = {Dimitros Poulakis and George Rahonis},
 booktitle    = {Algebraic Informatics, 9th International Conference, CAI 2022},
 series       = {Lecture Notes in Computer Science},
 volume       = {13706},
 address      = {Thessaloniki, Greece},
 pages        = {192--202},
 doi          = {10.1007/978-3-031-19685-0_14},
)
@article(MNS.22,
 author       = {Ivana Mici\'{c} and Linh Anh Nguyen and Stefan Stanimirovi\'{c}},
 year         = {2022},
 title        = {Characterization and computation of approximate bisimulations for fuzzy automata},
 journal      = {Fuzzy Sets and Systems},
 volume       = {442},
 pages        = {331--350},
 doi          = {10.1016/j.fss.2022.05.003},
)
@article(Nguyen.23a,
 author       = {Linh Anh Nguyen},
 year         = {2023},
 title        = {Fuzzy simulations and bisimulations between fuzzy automata},
 journal      = {International Journal of Approximate Reasoning},
 pages        = {113--131},
 doi          = {10.1016/j.ijar.2023.02.002},
)
@misc(NMS.23b,
 author       = {Linh Anh Nguyen and Ivana Mici\'{c} and Stefan Stanimirovi\'{c}},
 year         = {2023},
 title        = {Depth-Bounded Fuzzy Simulations and Bisimulations between Fuzzy Automata},
 doi          = {10.48550/arXiv.2307.03318},
 eprint       = {2307.03318},
)
@article(NMS.23a,
 author       = {Linh Anh Nguyen and Ivana Mici\'{c} and Stefan Stanimirovi\'{c}},
 year         = {2023},
 title        = {Fuzzy minimax nets},
 journal      = {IEEE Transactions on Fuzzy Systems},
 volume       = {31},
 number       = {8},
 pages        = {2799--2808},
 doi          = {10.1109/TFUZZ.2023.3237936},
)
@article(QZF.22,
 author       = {Sha Qiao and Ping Zhu and Jun e Feng},
 year         = {2022},
 title        = {Fuzzy bisimulations for nondeterministic fuzzy transition systems},
 journal      = {IEEE Transactions on Fuzzy Systems},
 volume       = {31},
 number       = {7},
 pages        = {2450--2463},
 doi          = {10.1109/TFUZZ.2022.3227400},
)
@article(QZP.23,
 author       = {Sha Qiao and Ping Zhu and Witold Pedrycz},
 year         = {2023},
 title        = {Approximate bisimulations for fuzzy-transition systems},
 journal      = {Fuzzy Sets and Systems},
 pages        = {108533},
 doi          = {10.1016/j.fss.2023.108533},
)
@article(SCB.18,
 author       = {Aleksandar Stamenkovi\'{c} and Miroslav \'{C}iri\'{c} and Ba\v{s}i\'{c}, Milan},
 year         = {2018},
 title        = {Ranks of fuzzy matrices. Applications in state reduction of fuzzy automata},
 journal      = {Fuzzy Sets and Systems},
 volume       = {333},
 pages        = {124--139},
 doi          = {10.1016/j.fss.2017.05.028},
)
@article(SCI.14,
 author       = {Aleksandar Stamenkovi\'{c} and Miroslav \'{C}iri\'{c} and Jelena Ignjatovi\'{c}},
 year         = {2014},
 title        = {Reduction of fuzzy automata by means of fuzzy quasi-orders},
 journal      = {Information Sciences},
 volume       = {275},
 pages        = {168--198},
 doi          = {10.1016/j.ins.2014.02.028},
)
@article(SM.22,
 author       = {Stefan Stanimirovi\'{c} and Ivana Mici\'{c}},
 year         = {2022},
 title        = {On the solvability of weakly linear systems of fuzzy relation equations},
 journal      = {Information Sciences},
 volume       = {607},
 pages        = {670--687},
 doi          = {10.1016/j.ins.2022.05.111},
)
@article(SMC.22,
 author       = {Stefan Stanimirovi\'{c} and Ivana Mici\'{c} and Miroslav \'{C}iri\'{c}},
 year         = {2022},
 title        = {Approximate bisimulations for fuzzy automata over complete Heyting algebras},
 journal      = {IEEE Transactions on Fuzzy Systems},
 volume       = {30},
 number       = {2},
 pages        = {437--447},
 doi          = {10.1109/TFUZZ.2020.3039968},
)
@article(YL.18,
 author       = {Chao Yang and Yongming Li},
 year         = {2018},
 title        = {$\varepsilon$-bisimulation relations for fuzzy automata},
 journal      = {IEEE Transactions on Fuzzy Systems},
 volume       = {26},
 number       = {4},
 pages        = {2017--2029},
 doi          = {10.1109/TFUZZ.2017.2760278},
)
@article(YL.20,
 author       = {Chao Yang and Yongming Li},
 year         = {2020},
 title        = {Approximate bisimulations and state reduction of fuzzy automata under fuzzy similarity measures},
 journal      = {Fuzzy Sets and Systems},
 volume       = {391},
 pages        = {72--95},
 doi          = {10.1016/j.fss.2019.07.010},
)