{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Massless Representations of the Poincaré Group: electromagnetism, gravitation, quantum mechanics, geometry","author_name":"Ronald Mirman","thumbnail_url":"https://www.ebooknetworking.net/books/059/534/big0595341241.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-0595341241.html\">Massless Representations of the Poincaré Group: electromagnetism, gravitation, quantum mechanics, geometry</a>","width":400,"height":300}