Pearson, Jonathan Generalized perturbations in modified gravity and dark energy Jonathan Pearson - Switzerland Springer International 2014 - xx,200p.; 24cm. - Springer theses . ISBN: 978-3-319-01209-4 Subjects--Topical Terms: Gravitation Perturbations (Astronomy)Dark energy (Astronomy) Dewey Class. No.: 521.1 / PEA