@conference {3790, title = {A general approach to non-classical first-order logics}, booktitle = {3rd World Congress on Universal Logic}, year = {2010}, month = {22/04/2010}, pages = {11 - 12}, publisher = {Ind{\'u}stria Portuguesa de Tipografia Lda}, organization = {Ind{\'u}stria Portuguesa de Tipografia Lda}, address = {Monte Estoril, Portugal}, isbn = {978-972-99289-2-5}, author = {Petr Cintula and Carles Noguera}, editor = {Instituto Superior T{\'e}cnico - Departamento de Matem{\'a}tica} }