@article{oai:gunma-u.repo.nii.ac.jp:00009713,
 author = {ERA, Akira and 江良, 亮},
 journal = {群馬大学社会情報学部研究論集},
 month = {Mar},
 note = {Departmental Bulletin Paper, The purpose of this paper is to analyze the efficiency of five key TV stations headquartered in Tokyo using financial data from their annual reports for the years 2018-2021. Although internet advertising expenditures overtook TV advertising expenditures in 2019, the impact of the Internet on the management efficiency of TV stations will also be considered. The results of the efficiency analysis show that the efficiency of key stations is generally trending downward.},
 pages = {17--26},
 title = {民間放送局の効率性分析 ―ネット動画配信時代におけるキー局を対象として―},
 volume = {30},
 year = {2023}
}