Uda, S. (December 1925). "On the Wireless Beam of Short Electric Waves". The Journal of the Institute of Electrical Engineers 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. However, it seems that Uda's pre-announcement caused his invention to lose its novelty and become unpatentable. He would not have been informed by Professor Yagi about those.)
Uda, S. (December 1925). "On the Wireless Beam of Short Electric Waves". The Journal of the Institute of Electrical Engineers 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. However, it seems that Uda's pre-announcement caused his invention to lose its novelty and become unpatentable. He would not have been informed by Professor Yagi about those.)
