TY - BOOK AU - AU - Ritter,G.X. TI - Information processing 89: Proceedings of the IFIP 11th World Computer Congress, San Francisco, U.S.A., August 28-September 1, 1989 SN - 0444880151 PY - 1989/// CY - Amsterdam PB - North-Holland KW - Information storage and retrieval systems KW - Congresses N1 - Includes authors index ER -