Tokiwayama bunko Chūgoku tōji kenkyūkai kaihō 5 : Seiji Tōyō 常盤山文庫中国陶磁研究会会報 5 : 青磁「東窯」 = The Bulletin of the Chinese Ceramic Study Association of Tokiwayama Bunko Foundation, vol. 5: « Dongyao » Celadon