UNIX LEADERS ANNOUNCE COMMON OPEN SOFTWARE ENVIRONMENT [online]. Hewlett-Packard Company, IBM Corp., The Santa Cruz Operation, SunSoft, Inc., Univel, UNIX System Laboratories, Inc., 1993-03-17 [cit. 2006-09-01]. Dostupné online.
DIGITAL EQUIPMENT CORPORATION ANNOUNCES SUPPORT FOR THE COMMON OPEN SOFTWARE ENVIRONMENT PROCESS [online]. Digital Equipment Corporation, 1993-06-08 [cit. 2006-09-01]. Dostupné online.
INDUSTRY LEADERS AGREE ON COMMON INTERFACE SPECIFICATION FOR UNIX-BASED OPERATING SYSTEMS [online]. OSF and UI members, 1993-09-01 [cit. 2006-09-01]. Dostupné online.
LEADING VENDORS UNIFY TO ACCELERATE OPEN SYSTEMS [online]. AT&T Global Information Systems, Digital Equipment Corporation, Hewlett-Packard Company, IBM Corporation, SunSoft Incorporated, et al., 1994-03-23 [cit. 2006-09-01]. Dostupné online.
OSF Announces Progressive New Business Model [online]. Open Software Foundation, 1994-03-23 [cit. 2006-09-01]. Dostupné online.
UNIX LEADERS COMPLETE FIRST RELEASE OF SPECIFICATION FOR COMMON OPEN SOFTWARE ENVIRONMENT DESKTOP [online]. Hewlett-Packard Company, IBM Corporation, SunSoft, Inc., UNIX System Laboratories, Inc., 1993-06-30 [cit. 2006-09-01]. Dostupné v archivu pořízeném dne 2012-02-07.