Electron-pair densities of group 2 atoms in their 1P and 3P terms T. Koga, H. Matsuyama, J. Molina Molina and J. S. Dehesa Eur. Phys. J. D, 7 1 (1999) 17-23 Published online: 15 August 1999 DOI: 10.1007/s100530050342