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Disney, Richard; Webb, Steven (March 1991). "Why are There So Many Long Term Sick in Britain?". The Economic Journal. 101 (405): 252. doi:10.2307/2233816. JSTOR2233816.
Moncrieff, Joanna; Pomerleau, Joceline (1 March 2000). "Trends in sickness benefits in Great Britain and the contribution of mental disorders". Journal of Public Health. 22 (1): 59–67. doi:10.1093/pubmed/22.1.59. PMID10774906.
Holmes, Phil; Lynch, Mauricea; Molho, Ian (20 January 2009). "An Econometric Analysis of the Growth in the Numbers Claiming Invalidity Benefit: An Overview". Journal of Social Policy. 20 (1): 87. doi:10.1017/S0047279400018493. S2CID146629883.
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