@inbook{inbook5a257b6e,
title   = {On the isometry group of Lorentz manifolds},
author = {Lichtenfelz, Leandro Augusto and Piccione, Paolo and Zeghib, Abdelghani},
year = {2012},
doi = {10.1007/978-1-4614-4897-6_12},
publisher = {Springer},
journal   = {Recent trends in Lorentzian geometry}
}