Reference for the FKG inequality

[hedipaldi]

Hi,
can someone give me a refference for the FKG inequality?
that is,
let f,g be two nondecreasing and nonegative measurable functions on a probability space.Then

∫fgdμ≥(∫fdμ)(∫gdμ)

 

[tiny-tim]

hi hedipaldi!

have you tried http://en.wikipedia.org/wiki/FKG_inequality ?

 

[hedipaldi]

Thank's