ck-url aclanthology.info/papers/n15-1132/n15-1132
ck-url arxiv.org/abs/1102.2743
ck-url arxiv.org/abs/1102.2743v1
ck-url arxiv.org/abs/1102.2743v2
ck-url arxiv.org/abs/1304.2756
ck-url arxiv.org/abs/1304.2756v1
ck-url arxiv.org/abs/1304.3847
ck-url arxiv.org/abs/1304.3847v1
ck-url arxiv.org/abs/1304.3847v2
ck-url arxiv.org/abs/1306.2268
ck-url arxiv.org/abs/1306.2268v1
ck-url arxiv.org/abs/1308.1049
ck-url arxiv.org/abs/1308.1049v1
ck-url arxiv.org/abs/1401.4604
ck-url arxiv.org/abs/1401.4604v1
ck-url arxiv.org/abs/1401.6122
ck-url arxiv.org/abs/1401.6122v1
ck-url arxiv.org/abs/1405.7393
ck-url arxiv.org/abs/1405.7393v1
ck-url arxiv.org/abs/1407.3986
ck-url arxiv.org/abs/1407.3986v1
ck-url arxiv.org/abs/1412.6759
ck-url arxiv.org/abs/1412.6759v1
ck-url arxiv.org/abs/1502.04275
ck-url arxiv.org/abs/1502.04275v1
ck-url arxiv.org/abs/1503.00269
ck-url arxiv.org/abs/1503.00269v1
ck-url arxiv.org/abs/1503.00269v2