Gries, Stefan Th. (to appear) Corpus-based methods in analyses of SLA data. In: Robinson, Peter and Nick Ellis (eds.). Handbook of cognitive linguistics and second language acquisition. Mahwah, NJ: Lawrence Erlbaum.
http://www.linguistics.ucsb.edu/faculty/stgries/research/SLA_Constructions_Corpora.pdf
http://www.linguistics.ucsb.edu/faculty/stgries/research/SLA_Constructions_Corpora.pdf