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@INCOLLECTION{jlc2018,
author = {León Casero, Jorge},
title = {Antonio Negri},
booktitle = {\emph{Philosophica}: Enciclopedia filosófica \emph{on line}},
editor = {Fernández Labastida, Francisco and Mercado, Juan Andrés},
year = {2018},
url = {http://www.philosophica.info/archivo/2018/voces/negri/Negri.html}
}