Uda, S. (december 1925). "On the Wireless Beam of Short Electric Waves". Jour. of IEE of Japan. Institute of Electrical Engineers of Japan: 1128. (This was the preface and notice in advance for a series of 11 papers with the same title by Uda between 1926–1929 on the antenna.)
wa5vjb.com
Yagi, Hidetsu; Uda, Shintaro (februar 1926). "Projector of the Sharpest Beam of Electric Waves"(PDF). Proc. of the Imperial Academy of Japan. Imperial Academy. 2 (2): 49-52. Hentet 11. september 2014.
