THE SIGMA EXPERIENCE - A STUDY IN THE EVOLUTIONARY DESIGN OF A LARGE SOFTWARE SYSTEMWILCZYNSKI D; TUGENDER R; OESTREICHER D et al.1979; NATIONAL COMPUTER CONFERENCE/1979/NEW YORK NY; USA; MONTVALE: AFIPS PRESS; DA. 1979; PP. 847-853; BIBL. 6 REF.Conference Paper

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SIGMA - AN INTERACTIVE MESSAGE SERVICE FOR THE MILITARY MESSAGE EXPERIMENTSTOTZ R; TUGENDER R; WILCZYNSKI D et al.1979; NATIONAL COMPUTER CONFERENCE/1979/NEW YORK NY; USA; MONTVALE: AFIPS PRESS; DA. 1979; PP. 839-846; BIBL. 9 REF.Conference Paper

A HIERARCHIC APPROACH TO LARGE SCALE DATA MANAGEMENT.THOMPSON JM; LINGARD RW; WILCZYNSKI D et al.1975; IN: PAC. 75. DATA: ITS USE ORGAN. MANAGE. ASSOC. COMPUT. MACH. REG. CONF.; SAN FRANCISCO; 1975; NEW YORK; ASSOC. COMPUT. MACH. INC.; DA. 1975; PP. 104-107; BIBL. 4 REF.Conference Paper