Why Spin Ice Obeys the Ice Rules
Physical Review Letters American Physical Society (APS) 95:21 (2005) 217201
Quantum dimer models and effective Hamiltonians on the pyrochlore lattice
(2005)
SU(2)-invariant spin- 12 Hamiltonians with resonating and other valence bond phases
Physical Review B American Physical Society (APS) 72:6 (2005) 064413