{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Calculus of Variations and Differential Equations","author_name":"Alexander Ioffe, Simeon Reich, I Shafrir","thumbnail_url":"https://www.ebooknetworking.net/books/084/930/big0849306051.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-0849306051.html\">Calculus of Variations and Differential Equations</a>","width":400,"height":300}