Narrow Band Phenomena—Influence of Electrons with Both Band and Localized Character formatIsbn:Softcover 9781468455618 there are several reports of 9783642096402 there are several reports of anion selective MS channels What makes an urban neighborhood tick The understanding of electronic behaviour in solids when (some of) the valence electrons have both localized and band like characteristics is one of the central problems of physics and chemistry in the second half of this century Note that we expressly asked participants to give a short readable account of the major problems in their field and not to emphasize their latest results to be as "technical" as they might be in a normal scientific article