DOI OWNER DEPOSIT-TIMESTAMP LAST-UPDATED CITED-BY-COUNT 10.1145/224139.224140 10.1145 20050126105040 2013-12-16 0 10.1145/224139.224141 10.1145 20050126105040 2013-12-16 0 10.1145/224139.224142 10.1145 20050126105040 2013-12-16 0