@article{article5510a770,
title   = {Level statistics transition in the spin boson model},
author = {Lewenkopf, C H and Nemes, M C and Marvulle, V and Pato, M P and Wreszinski, W F},
year = {1991},
doi = {10.1016/0375-9601(91)90575-s},
journal   = {Physics Letters a}
}