@article{MAN_1986__276_164181,
     author = {P.B. Chen and T.S. Wu},
     title = {On {Solvable} {Groups.}},
     journal = {Mathematische Annalen},
     pages = {43--52},
     publisher = {mathdoc},
     volume = {276},
     year = {1986},
     zbl = {0589.22008},
     url = {http://geodesic.mathdoc.fr/item/MAN_1986__276_164181/}
}