@article { 1673,
	title = {Weyl transverse gravity (WTDi) and the cosmological constan},
	volume = {D81},
	year = {2010},
	pages = {084057},
	publisher = {PRD},
	address = {Phys.Rev.D81:084057,2010. },
	URL = {http://arxiv.org/abs/arXiv:1001.4458},
	author = {Enrique Alvarez and Roberto Vidal}
}