@techreport{weko_209847_1, author = "Subhajit,Chaudhury and Toshihiko,Yamasaki", title = "Towards Adversarial Robustness of Learning in the Frequency Domain", year = "2021", institution = "Department of Information and Communication Engineering, The University of Tokyo, Department of Information and Communication Engineering, The University of Tokyo", number = "49", month = "feb" }