"The advent of metamaterials in the twenty-first century has shifted the subject of spatial dispersion from an obscure research topic to a major consideration in the characterization of artificial (composite) materials. The physics and engineering communities will benefit greatly from this invaluable resource authored by an internationally recognized expert on spatial dispersion. Undoubtedly, the book will become a classic in its field." Dr. Arthur D. Yaghjian, Electromagnetics Research, Concord, Massachusetts, USA"This excellent book provides an authoritative and comprehensive exposition of the homogenization of natural composites and metamaterials with weak spatial dispersion, covering many topics not easily found elsewhere. It will be extremely useful for students and experts interested in the physics of artificial magnetism and bianisotropy and an invaluable reference for years to come." Prof. Mário G. Silveirinha, Universidade de Lisboa, Portugal"Constantin Simovski is one of the most recognized experts in the field of non-local electromagnetic materials, and with this book he makes a gift to the scholars and students approaching the complexity of spatially dispersive artificial materials. He explores the topic from different viewpoints, shedding light on a matter that is typically arduous and difficult to understand. The organization of the book is very well conceived and allows the author to take the readers by the hand and accompany them in the discovery of the intricate and marvelous world of non-local metamaterials." Prof. Filiberto Bilotti, Roma Tre University, Italy