SOFIA (Bulgaria), December 10 (SeeNews) - Bulgarian cellulose producer Svilosa [BUL:3MZ] said on Monday that its majority owner A.R.U.S. Holding has published a buyout offer for the remaining 6.74% stake, or 2,139,070 shares, in the company it does not own currently, priced at 5.5 levs ($3.19/2.81 euro) per share.