Collingwood, E.F. Theory of cluster sets (The) / E.F. Collingwood and A.J. Lohwater - UK : Cambridge university press, 2004. - various pages ; 22 cm. - Cambridge tracts in mathematics and Mathematical physics ; no. 56 . ISBN: 9780521604819 Subjects--Topical Terms: Mathematical Physics Dewey Class. No.: 513.83 / COL/T