{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Invariant variational principles, Volume 138 (Mathematics in Science and Engineering)","author_name":"John David Logan","thumbnail_url":"https://www.ebooknetworking.net/books/012/454/big0124547508.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-0124547508.html\">Invariant variational principles, Volume 138 (Mathematics in Science and Engineering)</a>","width":400,"height":300}