http://jbli.iccas.ac.cn/papers?p_auth=qCIB5D7y&p_p_auth=F0anKkMP&p_p_id=49&p_p_lifecycle=1&p_p_state=normal&p_p_mode=view&_49_struts_action=%2Fmy_places%2Fview&_49_groupId=23170&_49_privateLayout=false