“A Test for Normality in the Tobit Model” with Jinook Jeong, The Korean Journal of Economics, Vol. 22 (2015), No. 1 (Special Issue), 61-70.
“Fourth Industrial Revolution and Innovative Capacity of South Korea: Comparative Analysis of Major Industrial Nations with US Patent Data, 1976-2015" with Jihong Lee and Hyunkyeong Lim (in Korean), Economic Analysis, Vol. 24(2018), No. 3, 37-81 [PDF]