TY - JOUR AU - Mitra, Kaushik AU - Williams, Carl AU - Melo, Carlos Sa de C2 - Physical Review Letters DA - 2008-10-16 14:10:14 LA - en PB - Physical Review Letters PY - 2008 TI - Vortices, Antivortices and Superfluid Shells Separating Mott-Insulating Regions ER -