Halle, Anaelle; Zhao, HongSheng; Li, Baojiu (2008). «Perturbations in a non-uniform dark energy fluid: equations reveal effects of modified gravity and dark matter». The Astrophysical Journal Supplement Series177: 1-13. arXiv:0711.0958. doi:10.1086/587744.
Halle, Anaelle; Zhao, HongSheng; Li, Baojiu (2008). «Perturbations in a non-uniform dark energy fluid: equations reveal effects of modified gravity and dark matter». The Astrophysical Journal Supplement Series177: 1-13. arXiv:0711.0958. doi:10.1086/587744.