Fitzenberger, Bernd; Osikominu, Aderonke; Völter, Robert - Institut für Arbeitsmarkt- und Berufsforschung (IAB) - 2006
results show a negative lock-in effect for the period right after the beginning of the program and significantly positive … one another are mainly driven by differences in the length of the lock-in periods." (Author's abstract, IAB-Doku) ((en)) …