1 Balcom,P, "Why is this happened?: Passive morphology and unaccusativity" 13 (13): 1-9, 1997
2 Oshita,H, "What is happened may not be what appears to be happening: A corpus study of “passive” unaccusatives in L2 English" 16 (16): 293-324, 2000
3 Kim, Jung-Tae, "Unaccusativity and L2 Passive Construction" 한국영어어문교육학회 12 (12): 69-89, 2006
4 Oshita,H, "The Unaccusative Trap in Second Language Acquisition" 23 (23): 279-304, 2001
5 Kondo,T, "Overpassivization in second language acquisition" 43 : 129-161, 2005
6 Ju,M.K, "Overpassivization errors by second language learners: The effect of conceptualizable agents in discourse" 22 : 85-111, 2000
7 No, GyeongHee, "Multiple Effects and the Learnability of English Unaccusatives" 한국영어교육학회 61 (61): 19-39, 2006
8 Croft,W, "Modern syntactic typology, In Approaches to language typology" Clarendon Press 1995
9 Kim,H.S, "Lecture note on the course of syntax and semantics"
10 Hirakawa,M, "L2 acquisition of Japanese unaccusative verbs by speakers of English, In The acquisition of Japanese as a second language" John Benjamins 89-113, 1999
1 Balcom,P, "Why is this happened?: Passive morphology and unaccusativity" 13 (13): 1-9, 1997
2 Oshita,H, "What is happened may not be what appears to be happening: A corpus study of “passive” unaccusatives in L2 English" 16 (16): 293-324, 2000
3 Kim, Jung-Tae, "Unaccusativity and L2 Passive Construction" 한국영어어문교육학회 12 (12): 69-89, 2006
4 Oshita,H, "The Unaccusative Trap in Second Language Acquisition" 23 (23): 279-304, 2001
5 Kondo,T, "Overpassivization in second language acquisition" 43 : 129-161, 2005
6 Ju,M.K, "Overpassivization errors by second language learners: The effect of conceptualizable agents in discourse" 22 : 85-111, 2000
7 No, GyeongHee, "Multiple Effects and the Learnability of English Unaccusatives" 한국영어교육학회 61 (61): 19-39, 2006
8 Croft,W, "Modern syntactic typology, In Approaches to language typology" Clarendon Press 1995
9 Kim,H.S, "Lecture note on the course of syntax and semantics"
10 Hirakawa,M, "L2 acquisition of Japanese unaccusative verbs by speakers of English, In The acquisition of Japanese as a second language" John Benjamins 89-113, 1999
11 Hwang J.B, "L2 acquisition of English unaccusative verbs under implicit and explicit learning conditions" 54 (54): 145-176, 1999
12 Burzio,L, "Italian syntax: A governmentbinding approach" Reidel 1986
13 Haegeman,L, "Introduction to government & binding theory" Blackwell 1994
14 Yip,V, "Interlanguage and learnability: From Chinese to English" Benjamins 1995
15 Perlmutter,D, "Impersonal passives and the unaccusative hypothesis" 157-189, 1978
16 Yip,V, "Grammatical consciousnessraising and learnability, In Perspectives on pedagogical grammar" Cambridge University Press 23-139, 1994
17 Hwang J. B, "Focus on form and the L2 learning of English unaccusative verbs" 56 (56): 111-133, 2001
18 김은희, "Difficulty Hierarchy of English Unaccusative Verbs for Korean Learners" 한국외국어교육학회 11 (11): 101-123, 2004
19 Harper Collins Publishers, "Collins COBUILD English Dictionary for Advanced Learners" Harper Collins Publishers 2001
20 Montrul,S.A, "Causative errors with unaccusative verbs in Spanish as a second language" 15 : 191-219, 1999
21 Zobl,H, "Canonical typological structures and ergativity in English L2 acquisition, In Linguistic perspectives on second language acquisition" Cambridge University Press 203-221, 1989
22 최명희, "Accounting for Variability in EFL Learners’ Grammars: Verb Placement and Agreement Marking" 한국중앙영어영문학회 51 (51): 379-401, 2009