1. US valuation of the EQ-5D health states: development and testing of the D1 valuation model
    Shaw JW, Johnson JA, Coons SJ
    Med Care 2005 Mar;43(3):203-220
    Published : 01-03-2005  
  2. EQ-5D value sets: inventory, comparitive review and user guide [Full Book]
    Rabin R, de Charro F, Szende A, Oppe M, Devlin N, Parkin D
    Book: EQ-5D value sets
    Published : 01-01-2003  
  3. Modeling valuations for EuroQol health states
    Dolan P
    Med Care 1997 Nov;35(11):1095-1108
    Published : 01-11-1997