The “O” sign
Crossref DOI link: https://doi.org/10.1007/s00261-017-1042-6
Published Online: 2017-01-18
Published Print: 2017-05
Update policy: https://doi.org/10.1007/springer_crossmark_policy
Hoffman, Cane F.
Selman, Larkin L.
Dyer, Raymond B.
Text and Data Mining valid from 2017-01-18