_:n9a9b6f7ace3b404a81dfbd0f0b4159a9xb2
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://link.springer.com/article/10.1007/s00776-003-0709-8?error=cookies_not_supported&error=cookies_not_supported&code=db8e9ec4-6d9c-4b98-80b1-b8d03bbf3edf&code=9c09429f-cbee-4027-9246-2d3bd162ee6c>