Bell inequalities for three particles
  We present tight Bell inequalities expressed by probabilities for three four- and five-dimensional systems. The tight structure of Bell inequalities for three $d$-dimensional systems (qudits) is proposed. Some interesting Bell inequalities of three qubits reduced from those of three qudits are also studied. 
Jing-Ling Chen, Chunfeng Wu, L. C. Kwek, C. H. Oh