{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Discourse on Fourier Series","author_name":"Cornelius Lanczos","thumbnail_url":"https://www.ebooknetworking.net/books/161/197/big1611974518.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-1611974518.html\">Discourse on Fourier Series</a>","width":400,"height":300}