Choi, Donseung, and Eunho Cho. “International Diversification, Product Strategy, And Firm Value:Evidence From Korea”. International Business & Economics Research Journal (IBER) 13, no. 6 (October 31, 2014): 1551-1564. Accessed August 16, 2020. https://clutejournals.com/index.php/IBER/article/view/8951.