{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Convex analysis and variational problems (Studies in mathematics and its applications)","author_name":"I Ekeland","thumbnail_url":"https://www.ebooknetworking.net/books/044/410/big044410898X.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-044410898X.html\">Convex analysis and variational problems (Studies in mathematics and its applications)</a>","width":400,"height":300}