Collective excitations in solids / edited by Baldassare Di Bartolo, assistant editor, Joseph Danko. NATO Advanced Study Institute on Collective Excitations in Solids (1981 : Erice, Italy) Di Bartolo, Baldassare. Danko, Joseph. North Atlantic Treaty Organization. Scientific Affairs Division. Collective excitations Congresses. Exciton theory Congresses. QC176.8.E9 N36 1981 530.41 19 DIC "Proceedings of the NATO Advanced Study Institute on Collective Excitations in Solids, held June 15-29, 1981, in Erice, Italy"--T.p. verso. Includes bibliographical references and index. New York : Plenum Press : NATO Scientific Affairs Division, c1983. c1983. 1983 Text xxii, 716 p. : eng NATO advanced science institutes series. Series B, Physics ; v. 88