This article is about the Soviet clone of Unix. For the Acorn Computers operating system, see Acorn MOS. For the Soviet clone of VAX/VMS, see OpenVMS § Influence.
^Balodis, Rihards; et al. "History of Nordic Computing 3" IFIP Advances in Information and Communication Technology, 2011, Volume 350/2011, 453-461; "The common operating system was MOS, a clone of UNIX."