Media type: E-Article Title: Structured numbers Contributor: Blondel, Vincent D. Published: Springer Science and Business Media LLC, 1998 Published in: Acta Informatica, 35 (1998) 1, Seite 1-15 Language: Not determined DOI: 10.1007/s002360050113 ISSN: 0001-5903; 1432-0525 Keywords: Computer Networks and Communications ; Information Systems ; Software Origination: Footnote: