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Costs and quality of life in multiple sclerosis : a cross-sectional observational study in the UK
Kobelt, Gisela, (2000)
Costs and quality of life in multiple sclerosis : a cross-sectional observational study in Germany
Flexible work-arrangements and the quality of life
Nierop, Cees, (2003)
Quality-of-life in individualistic society : a comparison of 43 nations in the early 1990's
Veenhoven, Ruut, (1999)
Is happiness relative?
Veenhoven, Ruut, (1989)
Happy life-expectancy : a comprehensive measure of quality-of-life nations
Veenhoven, Ruut, (1996)