@Article{ SÁNCHEZ-DEHESA_ANGULO_Koga-:3-8,

author = { JESÚS SÁNCHEZ-DEHESA MORENO-CID and JUAN CARLOS ANGULO IBÁÑEZ and T. Koga- } ,

title = { THE ELECTRON-PAIR DENSITY OF ATOMIC SYSTEMS: RIGOROUS BOUNDS AND APPLICATION TO HELIUM },

journal = { Zeitschrift für Physik D Atoms, Molecules and Clusters },

year = { 1992 },

pages = { 3-8 },

}