Sixt, MichaelaMichaelaSixtGoy, MartinMartinGoyBesuch, GeorgGeorgBesuch2019-09-192016-06-022016978-3-658-11994-2https://fis.uni-bamberg.de/handle/uniba/40493engThe Concept of Individual Retracking in NEPS—Approach, Practice, and First Empirical Evidence From Starting Cohorts 3 and 4bookpart