Study on the Development Methodology of Digital Textbook on KNOU. - Kwang-Sik Chung; Joo Hee Kim; Joo Hee Choi; Hye Won Byun (CSREA EEE, 2010)

MobileSense: A robust sound classification system for mobile applications. - In-Cheol Kim; Joo Hee Kim; Seok-Jun Lee (IWSSIP, 2014)