Woolford, Ellen. 1993. Symmetric and Asymmetric Passives. Natural Language and Linguistic Theory 11. 679-728.
@article{Woolford-1993,
author = {Woolford, Ellen},
journal = {Natural Language and Linguistic Theory},
pages = {679-728},
title = {Symmetric and Asymmetric Passives},
volume = {11},
year = {1993}
}