Bustince H., Calvo T., de Baets B., Fodor J., Mesiar Radko, Montero J., Paternain D., Pradera A. :  A class of aggregation functions encompassing two-dimensional OWA operators , Information Sciences vol.180, 10 (2010), p. 1977-1989 [2010] Download DOI: 10.1016/j.ins.2010.01.022