The cobra head sign
Crossref DOI link: https://doi.org/10.1007/s00261-014-0269-8
Published Online: 2014-10-14
Published Print: 2015-03
Update policy: https://doi.org/10.1007/springer_crossmark_policy
Tirman, Philippe A.
Dyer, Raymond B.
Text and Data Mining valid from 2014-10-14