Oded Goldreich Daniele Micciancio Shmuel Safra Jean-Pierre Seifert Approximating Shortest Lattice Vectors is not Harder than Approximating Closest Lattice Vectors. 55-61 1999 71 Inf. Process. Lett. 2 db/journals/ipl/ipl71.html#GoldreichMSS99 http://dx.doi.org/10.1016/S0020-0190(99)00083-6