Dark energy and dark matter from hidden symmetry of gravity model with a non-Riemannian volume form Eduardo Guendelman, Emil Nissimov and Svetlana Pacheva Eur. Phys. J. C, 75 10 (2015) 472 Published online: 03 October 2015 DOI: 10.1140/epjc/s10052-015-3699-8