Proceedings of the 7th national BIM conference 并列题名：Proceedings of the 7th national BIM conference Proceedings of the international conference Proceedings of the 6th international M.T.D.R. conference Proceedings of the 1st international conference Proceedings of the 7th China urban housing conference proceedings of the first internet law conference 并列题名：Proceedings of the international conference Proceedings of the first international conference proceedings of the second internet law conference