Invalid types in CSL JSON items returned by DOI content negotiation

[dhimmel]

Sorry if this issue is a bit off topic. @gbilder mentioned this repo on twitter.

DOI content negation that accepts application/vnd.citationstyles.csl+json produces item types that are not part of the CSL specification.

Specifically, I had to convert the following invalid types:

• journal-article
• book-chapter
• posted-content
• proceedings-article

[dhimmel]

For example

curl --location --header "Accept: application/vnd.citationstyles.csl+json" https://doi.org/10.7717/peerj.705 |
  python -m json.tool

Produces

{
    "indexed": {
        "date-parts": [
            [
                2016,
                12,
                20
            ]
        ],
        "date-time": "2016-12-20T02:24:14Z",
        "timestamp": 1482200654778
    },
    "reference-count": 68,
    "publisher": "PeerJ",
    "content-domain": {
        "domain": [],
        "crossmark-restriction": false
    },
    "short-container-title": [],
    "cited-count": 0,
    "DOI": "10.7717/peerj.705",
    "type": "journal-article",
    "created": {
        "date-parts": [
            [
                2015,
                1,
                13
            ]
        ],
        "date-time": "2015-01-13T07:41:48Z",
        "timestamp": 1421134908000
    },
    "page": "e705",
    "source": "CrossRef",
    "title": "Lung cancer incidence decreases with elevation: evidence for oxygen as an inhaled carcinogen",
    "prefix": "http://id.crossref.org/prefix/10.7717",
    "volume": "3",
    "author": [
        {
            "given": "Kamen P.",
            "family": "Simeonov",
            "affiliation": [
                {
                    "name": "Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA"
                }
            ]
        },
        {
            "given": "Daniel S.",
            "family": "Himmelstein",
            "affiliation": [
                {
                    "name": "Biological & Medical Informatics, University of California, San Francisco, CA, USA"
                }
            ]
        }
    ],
    "member": "http://id.crossref.org/member/4443",
    "published-online": {
        "date-parts": [
            [
                2015,
                1,
                13
            ]
        ]
    },
    "container-title": "PeerJ",
    "original-title": [],
    "deposited": {
        "date-parts": [
            [
                2016,
                12,
                19
            ]
        ],
        "date-time": "2016-12-19T17:18:42Z",
        "timestamp": 1482167922000
    },
    "score": 1.0,
    "subtitle": [],
    "short-title": [],
    "issued": {
        "date-parts": [
            [
                2015,
                1,
                13
            ]
        ]
    },
    "alternative-id": [
        "10.7717/peerj.705"
    ],
    "URL": "http://dx.doi.org/10.7717/peerj.705",
    "ISSN": [
        "2167-8359"
    ],
    "citing-count": 68
}

Note the invalid "type": "journal-article".

[dhimmel]

Or for example, a bioRxiv preprint:

curl --silent --location \
  --header "Accept: application/vnd.citationstyles.csl+json" \
  https://doi.org/10.1101/087619 |
  python -m json.tool |
  grep '"type":'

Returns "type": "posted-content",. I'm not sure what's the best CSL type to match posted-content.

[dhimmel]

See also #43 (comment) by @aurimasv.

[dhimmel]

Thanks @kjw for the fix. And the reference to the commit that closes this issue is really helpful!

I'm currently getting an invalid CSL type for a DOI registered with DataCite. I reprorted that issue to datacite/datacite#182, since I'm assuming it's a DataCite issue rather than a Crossref issue.

[mfenner]

Yes, the DataCite content negotation uses different code. I will follow-up at datacite/datacite#182.

[larsgw]

This is not working anymore. https://doi.org/10.1101/2021.08.15.21262067 returns type: 'posted-content' and subtype: 'preprint'. Note that apart from the invalid type, the field for a "subtype" is actually genre, not subtype.