Jean-Luc Marichal Radko Mesiar Tatiana Rückschlossová A complete description of comparison meaningful functions. 943-948 2005 EUSFLAT Conf. http://www.eusflat.org/proceedings/EUSFLAT-LFA_2005/papers/S105-19.pdf conf/eusflat/2005 db/conf/eusflat/eusflat2005.html#MarichalMR05