@misc{Grzegorzewski_Przemysław_(1963–_)._Autor_Trapezoidal_2002,
 author={Grzegorzewski, Przemysław (1963– ). Autor and Mrówka, Edyta. Autor},
 copyright={Creative Commons Attribution BY 4.0 license},
 address={Warszawa},
 journal={Raport Badawczy = Research Report},
 howpublished={online},
 year={2002},
 publisher={Instytut Badań Systemowych. Polska Akademia Nauk},
 publisher={Systems Research Institute. Polish Academy of Sciences},
 language={eng},
 abstract={The problem of the trapezoidal approximation of fuzzy numbers is discussed. A set of criteria for approximation operators is formulated. These constraints can be used for direct operator derivation. A new nearest trapezoidal approximation operator preserving expected interval is suggested.},
 type={Text},
 title={Trapezoidal approximation of fuzzy numbers},
 keywords={Fuzzy numbers, Liczby rozmyte, Approximation of fuzzy numbers, Aproksymacja liczb rozmytych, Aproksymacja},
}