The effects of Vk centers upon the binding energy of Li22+H22nLiH ionic crystals were investigated theoretically. It was shown that, when constructing model potentials, the contribution of many-body effects had to be accounted for and that basis sets with diffuse functions were required in order to treat the anions accurately.

A.S.Shalabi: Molecular Physics, 1995, 85[5], 1033-6