1. Leisure College, USA: the decline in student study time;Babcock,2010
2. The falling time cost of college: evidence from half a century of time use data;Babcock;Rev. Econ. Stat.,2011
3. Does more generous student aid increase enrolment rates into higher education? Evaluating the German Student Aid Reform of 2001;Baumgartner,2006
4. Human Capital — A Theoretical and Empirical Analysis With Special Reference to Education;Becker,1993
5. How financial aid affects persistence;Bettinger,2004