Andreev-Lifshitz supersolid revisited for a few electrons on a square lattice. I G. Katomeris, F. Selva and J.-L. Pichard Eur. Phys. J. B, 31 3 (2003) 401-412 Published online: 14 February 2003 DOI: 10.1140/epjb/e2003-00048-0