@article{oai:nagasaki-u.repo.nii.ac.jp:00014978, author = {Kajimoto, Hiroshi and Eguchi, Kazuhiro}, journal = {長崎大学教育学部紀要: 自然科学, Bulletin of Faculty of Education, Nagasaki University : Natural Science}, month = {Mar}, note = {Classical isoperimetric inequality is shown in a complex plane. In a complex plane we can use effectively the complex Fourier expansion in the computations., 長崎大学教育学部紀要: 自然科学, 79, pp.1-4; 2011}, pages = {1--4}, title = {On isoperimetric problem in a complex plane}, volume = {79}, year = {2011} }