This model is based on
\bibitem{Belyaev:2005ew}
  A.~Belyaev, C.~Leroy, R.~Mehdiyev and A.~Pukhov,
  %`Leptoquark single and pair production at LHC with calcHEP/compHEP
  % in  the complete model,''
  JHEP {\bf 0509} (2005) 005
  [arXiv:hep-ph/0502067].
