回复: [求助]lexical density tools needed
1. Durán, P., Malvern, D., Richards, B., & Chipere, N. (2004). Developmental trends in lexical diversity. Applied Linguistics, 25 (2), 220-242.
2. The Lexical Profile of Second Language Writing: Does It Change Over Time?
B Laufer - RELC Journal, 1994