@article{articlef0906e1a,
title   = {Hyperspherical adiabatic approach for the helium atom},
author = {Masili, M. and Hornos, José Eduardo Martinho and De Groote, J. J.},
year = {1995},
doi = {10.1103/physreva.52.3362},
journal   = {Physical Review A}
}