%0 Journal Article %A J. Alaminos %A M. Brešar %A J. Extremera %A A. R. Villena %T Maps preserving zero products %J Studia Mathematica %D 2009 %P 131-159 %V 193 %N 2 %U http://geodesic.mathdoc.fr/articles/10.4064/sm193-2-3/ %R 10.4064/sm193-2-3 %G en %F 10_4064_sm193_2_3