{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Formal Development of Programs and Proofs","author_name":"Edsger Dijkstra, E. W. Dijkstra","thumbnail_url":"https://www.ebooknetworking.net/books/020/117/big0201172372.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-0201172372.html\">Formal Development of Programs and Proofs</a>","width":400,"height":300}