@INPROCEEDINGS{ButnariuKlementMesiarNavara:FSTA04,
  IS = { zkontrolovano 30 Mar 2004 },
  UPDATE  = { 2004-03-26 },
       AUTHOR = {Butnariu, Dan and Klement, Erich Peter and 
                 Mesiar, Radko and Navara, Mirko},
        TITLE = {Triangular norms and negations -- which 
                 expressions do they allow?},
     EDITOR   = { E.P.~Klement and R.~Mesiar and 
                  E.~Drobn{\'a} and F.~Chovanec },
    BOOKTITLE = {Abstracts of the 7th International Conference 
                 on Fuzzy Sets Theory and Its Applications},
    PUBLISHER = {Printing House of the Military Academy in 
                 Liptovsk{\'y} Mikul{\'a}{\v s}},
      ADDRESS = {Liptovsk{\'y} Mikul{\'a}{\v s}, Slovakia},
         YEAR = {2004},
        MONTH = {January},
  day =         {26--30},
        PAGES = {25--26},
  isbn =        {none},
  book_pages =  {110},
  venue =       {Liptovsk{\'y} J{\'a}n, Slovakia},
  importance =  {1},
  authorship =  {25-25-25-25},
  keywords =    {fuzzy set, measure, tribe, triangular norm},
  annote = {The classical measure and probability theory is based on
    the notion of Sigma-algebra of subsets of a set.  Butnariu and
    Klement generalized it to fuzzy sets by considering collections of
    fuzzy sets called $T$-tribes (where $T$ denotes a fixed triangular
    norm).  Here we summarize results about characterization of
    tribes, showing the particular role of Hamacher product.},
  project =     {GACR 201/02/1540, CEEPUS SK-042},
  psurl    = { [PostScript] },
}