DOI OWNER DEPOSIT-TIMESTAMP LAST-UPDATED CITED-BY-COUNT 10.1306/99A4D097-3318-11D7-8649000102C1865D 10.1306 20030131155706 2009-02-02 0 10.1306/BF9AAB5A-0EB6-11D7-8643000102C1865D 10.1306 20030131155706 2007-02-13 0