@Article{ BraPia12, author = { Andrea Braides and Andrey Piatnitski }, title = { Variational problems with percolation: dilute spin systems at zero temperature }, journal = { J. Stat. Phys. }, year = { 2012 }, doi = { 10.1007/s10955-012-0628-1 }, volume = { 149 }, pages = { 846-864 }, }