@article{Heller:2008sE, author = "Heller, Urs M. and Levkova, Ludmila", title = "{The equation of state with nonzero chemical potential for 2+1 flavors}", doi = "10.22323/1.042.0190", journal = "PoS", year = 2008, volume = "LATTICE 2007", pages = "190" }