Bergelson, Vitaly (ed) & Blass, Andreas (ed) & Di Nasso, Mauro (ed)...[et al.]Ultramath , 2008
Ultrafilters across mathematics: international congress, Ultramath 2008: applications of ultrafilters and ultraproducts in mathematics, June 1-7, 2008, Pisa, Italy. - American Mathematical Society, 2010. - (Contemporary Mathematics; 530).