Predictions of geometrical structures and ionization potentials for small barium clusters BanV. Boutou, A. R. Allouche, F. Spiegelmann, J. Chevaleyre and M. Aubert FréconEur. Phys. J. D, 2 1 (1998) 63-73DOI: https://doi.org/10.1007/s100530050112