From the reviews: It is worth saying at the outset that Perfect lattices in Euclidean spaces is a state-of-the-art research monograph (with exercises) by one of the leading experts in this rapidly developing field ... . Martinet's book appears in the same Springer series as Conway and Sloane's epochal Sphere packings, lattices and groups and it will be similarly appreciated by researchers in this area as a carefully written, historically aware and authoritative companion volume focusing on local methods in lattice theory. (Nick Lord, The Mathematical Gazette, Vol. 88 (512), 2004)