Shaping micro-clusters via inverse jamming and topographic close-packing of microbombs oleh Seunggun Yu, Hyesung Cho, Jun Pyo Hong, Hyunchul Park, Jason Christopher Jolly, Hong Suk Kang, Jin Hong Lee, Junsoo Kim, Seung Hwan Lee, Albert S. Lee, Soon Man Hong, Cheolmin Park, Shu Yang, Chong Min Koo