5Holzer, H.J. (1987) . Job Search by Employed and Unemployed Youth [J] , Industrial and Labor Relations Review 40, 601-11.
6Gregg, P. and Wadsworth, J. (1996). How Effective Are State Employment Agencies? Jobcentre Use and Job Matching in Britain [J], Oxford Bulletin of Economics and Statistics, 58, 43-67.
7Blau, D.M. and Robins, P.K. (1990) . Job Search Outcomes for the Employed and Unemployed [J], Journal of Political Economy, 98, 637-55.