@unpublished{TUW-226008, author = {de la Rosa de Saa, Sara and Filzmoser, Peter and Gil, M.A. and Lubiano, M.A.}, title = {Fuzzy rating or fuzzy linguistic?}, year = {2013}, note = {talk: ODAM 2013 - Olomoucian Days of Applied Mathematics, Olomouc, Czech Republic; 2013-06-14} }