Cynthia Dwork, Moni Naor, Hoeteck Wee. Pebbling and Proofs of Work. In Victor Shoup, editor, Advances in Cryptology - CRYPTO 2005: 25th Annual International Cryptology Conference, Santa Barbara, California, USA, August 14-18, 2005, Proceedings. Volume 3621 of Lecture Notes in Computer Science, pages 37-54, Springer, 2005. [doi]
Abstract is missing.