Jülich : John von Neumann Institute for Computing, NIC series 2, 47 pp. (2000). NIC Series Volume 2 : Modern Methods and Algorithms of Quantum Chemistry, Poster Presentations, Johannes Grotendorst (Editor), chapter 47, p. 47, Jülich : John von Neumann Institute for Computing, 2000. ISBN: 3-00-005746-3