@article{Hægeland1999,
author = {Hægeland, T. and Klette, T.J. and Salvanes, K.G.},
title= {Declining returns to education in Norway? Comparing estimates across cohorts, sectors, and over time},
year = {1999},
doi = {10.1111/1467-9442.00173},
journal = {Scandinavian Journal of Economics},
volume = {101},
number = {4},
pages = {555--576},
}