{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"The Ball and Some Hilbert Problems (Lectures in Mathematics. ETH Zürich)","author_name":"Rolf-Peter Holzapfel","thumbnail_url":"https://www.ebooknetworking.net/books/376/432/big3764328355.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-3764328355.html\">The Ball and Some Hilbert Problems (Lectures in Mathematics. ETH Zürich)</a>","width":400,"height":300}