@article{Matlak:2009,
author
=
"M.Matlak and J.Aksamit and B.Grabiec and W.Nolting",
title
=
"Hubbard Hamiltonian in the dimer representation Large-U case",
journal
=
"Annalen der Physik",
volume
=
"Vol. 12",
number
=
"no 5",
pages
=
"304--319",
year
=
"2003",
}