The bar code book : comprehensive guide to reading, printing, specifying, and applying bar code and other machine-readable symbols / Roger C. Palmer. - 4th ed., rev. a. expanded. - Peterborough : Helmers Publ., [2001]. - xiii, 456 p. : fig. ; 23 cm.см.. - Bibliogr.: p. 445-447. - ISBN 0-911261-13-3[MFN: 31499]