@article{Michel Ferlus,
title = {中古汉语四等的来龙去脉},
author = {Michel Ferlus and 沈瑞清 and 焦磊 and 李德超 and 何怡 },
journal = {语言学论丛},
volume = {},
pages = {312-349+358},
year = {2014},
}