{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Spectral Theory of Differential Operators: Self-Adjoint Differential Operators","author_name":"V.A. Il'in","thumbnail_url":"https://www.ebooknetworking.net/books/030/611/big0306110377.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-0306110377.html\">Spectral Theory of Differential Operators: Self-Adjoint Differential Operators</a>","width":400,"height":300}