Ju Hyuk Park, Sei Hyun Yang, Hyeong Rae Lee, Cheng Bin Yu, Seong Yeol Pak, Chi Sung Oh, Yeon June Kang, Jae Ryoun Youn, Optimization of low frequency sound absorption by cell size control and multiscale poroacoustics modeling, Journal of Sound and Vibration, 397() : 17-30 2017