@article {Lahanas:1999uy,
	title = {{Neutralino relic density in a universe with nonvanishing cosmological constant}},
	journal = {Phys.Rev.},
	volume = {D62},
	year = {2000},
	pages = {023515},
	doi = {10.1103/PhysRevD.62.023515},
	author = {Lahanas, A.B. and Nanopoulos, Dimitri V. and Spanos, V.C.}
}
