@article{article33450986,
title   = {General theoretical approach to coulombic three-body systems by the hyperspherical formalism},
author = {Coelho, H T and De Groote, J J S and Hornos, José Eduardo Martinho},
year = {1992},
doi = {10.1103/physreva.46.5443},
journal   = {Physical Review a}
}