Corpus-based vocabulary lists for language learners for nine languages.
Adam KilgarriffFrieda CharalabopoulouMaria GavrilidouJanne Bondi JohannessenSaussan KhalilSofie Johansson KokkinakisRobert LewSerge SharoffRavikiran VadlapudiElena VolodinaPublished in: Lang. Resour. Evaluation (2014)