A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2022; you can also visit the original URL. The file type is application/pdf.
application/pdf
永井 宏幸. "U. R. Pictureから見たいくつかの問題点(Urbaryon模型による素粒子反応,研究会報告)." Soryushiron Kenkyu Electronics 48.4 (1973) D31-D34