宋平波

Method and system for implementing database access

赵华, 李云, 张玉忠, 2010 .

Method and device for adjusting media item sequence in playlist

赵华, 徐雄, 李云, 2014 .

User information relating method, system and server

徐雄, 李云, 宋平波, 2011 .

According to the method of retrieval services and systems

赵华, 陈康, 李云, 2009 .