@article{Van der Berg1994,
author = {Van der Berg, G.J. and Lindeboom, M. and Ridder, G.},
title= {Attrition in longitudinal panel data, and the empirical analysis of dynamic labour market behavior},
year = {1994},
doi = {10.1002/jae.3950090408},
journal = {Journal of Applied Econometrics},
volume = {9},
pages = {421--435},
}