Measuring Local Economy Efficiency With Two-Stage Bootstrap DEA: Evidence From Municipal Currency in South Korea. - Hee Jay Kang; Changhee Kim; Jiyoon Son (Int. J. Softw. Innov., 2022)

Is There a Difference in Innovation Performance Depending on the Investment in Each Stage of Development Process? Evidence From Medical Device Industry. - Jaeho Shin; Yeongjun Kim; Jiyoon Son; Changhee Kim (IEEE Access, 2023)