"Keita;Watanabe|Mikiya;Fujita|Kenji;Tsuruta|","Design of non-circular membranes metasurfaces for broadband sound absorption","Japanese Journal of Applied Physics","0021-4922","2020-04-06","59","SK","SKKA06","","","","000546613200005","http://escholarship.lib.okayama-u.ac.jp/60652","10.35848/1347-4065/ab7e3e"