Applied lattice gauge calculations: diquark content of the nucleon
  As an example of an application of lattice QCD we describe a computation of four-quark operators in the nucleon. The results are interpreted in a diquark language. 
M. G\"ockeler, R. Horsley, B. Klaus, D. Pleiter, P.E.L. Rakow, S.   Schaefer, A. Sch\"afer and G. Schierholz