DOI OWNER DEPOSIT-TIMESTAMP LAST-UPDATED CITED-BY-COUNT 10.21661/a-661 10.21661 201912181342 2019-12-18 0 10.21661/r-519238 10.21661 201912181342 2019-12-18 1 10.21661/r-519253 10.21661 201912181342 2019-12-18 0 10.21661/r-519272 10.21661 201912181342 2019-12-18 0 10.21661/r-519323 10.21661 201912181342 2019-12-18 0