Comparison of morphology and compressive deformation behavior of copper foams manufactured via freeze-casting and space-holder methods oleh Kicheol Hong, Csilla Kádár, Michal Knapek, Daria Drozdenko, Péter Jenei, Myung-Yeon Kim, Heeman Choe, Kristián Máthis, Hyeji Park, Jenő Gubicza