{
    "query": {
        "category": "Mathematics",
        "publication_date": "1997-04",
        "nr_of_items": 1
    },
    "items": [
        {
            "title": "Geometry of Nonpositively Curved Manifolds",
            "subtitle": null,
            "author": "Eberlein, Patrick B.",
            "isbn": "9780226181981",
            "publisher": "University of Chicago Press",
            "link_to_publisher": "https:\/\/press.uchicago.edu\/ucp\/books\/book\/chicago\/G\/bo3633915.html"
        }
    ]
}