Korea Software Property-Right Council (February 2002). 이스트소프트. 소프트웨어저작권 (in Korean). 2002 (2). Korea Software Property-Right Council: 20–22. Archived from the original on 2016-07-09.
Korea Software Property-Right Council (February 2002). 이스트소프트. 소프트웨어저작권 (in Korean). 2002 (2). Korea Software Property-Right Council: 20–22. Archived from the original on 2016-07-09.