@Article{ ARIAS_BUENDÌA_GÀLVEZ:5131-5137,

author = { FERNANDO ARIAS DE SAAVEDRA ALÍAS and ENRIQUE BUENDÌA ÀVILA and FRANCISCO JAVIER GÀLVEZ CIFUENTES } ,

title = { SINGLE-PARTICLE AND ELECTRON-PAIR DENSITIES AT THE ORIGIN IN THE GROUND STATE OF HELIUM-LIKE SYSTEMS },

journal = { Journal of Physics B: Atomic, Molecular and Optical Physics },

year = { 1994 },

volume = { 27 },

pages = { 5131-5137 },

}