by Dufner, H., Kast, S. M., Brickmann, J., Schlenkrich, M.
Published in Journal of computational chemistry (15.04.1997)

by HAUPTMANN, Sven, DUFNER, Hagen, BRICKMANN, Jürgen, KAST, Stefan M, BERRY, R. Stephen
Published in Physical chemistry chemical physics : PCCP (16.01.2003)

by Dufner H, Erlandson G
Published in North Dakota Farm Research (1977)