@Article{Olmo2012,
author="Olmo, G. J.",
title="Birkhoff{\textquoteright}s theorem and perturbations in f(R) theories",
journal="Annalen der Physik",
year="2012",
publisher="Wiley-V C H Verlag Gmbh",
volume="524",
number="5",
pages="87--88",
optnote="WOS:000303662900008",
optnote="exported from refbase (https://references.ific.uv.es/refbase/show.php?record=1013), last updated on Thu, 31 May 2012 11:34:53 +0000",
issn="0003-3804",
doi="10.1002/andp.201200721",
opturl="https://doi.org/10.1002/andp.201200721",
language="English"
}