Lawrence Berkeley National Laboratory Recent Work Title THE ""CLUSTER-BETHE LATTICE"" METHOD: THE ELECTRONIC DENSITY OF STATES OF HETEROPOLAR SYSTEMS Permalink https://escholarship.org/uc/item/9rx3548q Authors Yndurain, F. Joannopoulos, J.D. Publication Date 1974-10-01 eScholarship.org Powered by the California Digital Library University of California