https://web.archive.org/web/20170923135933id_/https://www.econstor.eu/bitstream/10419/20030/1/dp416.pdf
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-Bruno Crépon & Francis Kramarz, Employed 40 Hours or Not-Employed 39. Lessons from the 1982 Mandatory Reduction of the Workweek,
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-Bruno Crépon & Francis Kramarz, Employed 40 Hours or Not-Employed 39. Lessons from the 1982 Mandatory Reduction of the Workweek,