Reinier Bröker Denis Xavier Charles Kristin Lauter Evaluating Large Degree Isogenies and Applications to Pairing Based Cryptography. 100-112 2008 Pairing http://dx.doi.org/10.1007/978-3-540-85538-5_7 conf/pairing/2008 db/conf/pairing/pairing2008.html#BrokerCL08