Relations in Fuzzy Class Theory: : Initial steps.

Libor Behounek Ulrich Bodenhofer Petr Cintula Relations in Fuzzy Class Theory: : Initial steps. 1729-1772 2008 159 Fuzzy Sets and Systems 14 http://dx.doi.org/10.1016/j.fss.2007.10.012 db/journals/fss/fss159.html#BehounekBC08