{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Second-Order Equations With Nonnegative Characteristic Form","author_name":"O. A. Oleinik, E. V. Radkevic","thumbnail_url":"https://www.ebooknetworking.net/books/030/630/big0306307510.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-0306307510.html\">Second-Order Equations With Nonnegative Characteristic Form</a>","width":400,"height":300}