Mills, Robert Propagators for many-particle systems an elementary treatment. - New York Gordon and Breach [1969] - x, 127 p. illus. 24 cm. Bibliography: p. 122-124. LCCN: 69016985 Subjects--Topical Terms: Many-body problem. LC Class. No.: QC174.5 / .M54 Dewey Class. No.: 530.14/4