It took us a long time to write this book. In 1959, two of us (Lifshits and Kaganov) pub- lished a review of the mechanics of electrons with a complex dispersion law. About that time, geometrical terms such as extremal sections, curvatures, diameters, limiting points began to appear in papers on the electron theory of metals. They were followed by terms quite unusual in the scientific literature: monsters, pockets, arms, sheets, and so on. With their excitingly shaped figures, papers on the electron theory of metals began to resemble catalogs of exhibitions of abstract or ultramodern...
It took us a long time to write this book. In 1959, two of us (Lifshits and Kaganov) pub- lished a review of the mechanics of electrons with a complex...
