A general formulation of bradford's distribution: The graph-oriented approach. - Isao Asai (J. Am. Soc. Inf. Sci., 1981)

Adjusted age distribution and its application to impact factor and immediacy index. - Isao Asai (J. Am. Soc. Inf. Sci., 1981)

Experiments of Collecting WWW Information Using Distributed WWW Robots. - Hayato Yamana; Kent Tamura; Hiroyuki Kawano; Satoshi Kamei; Masanori Harada; Hideki Nishimura; Isao Asai; Hiroyuki Kusumoto; Yoichi Shinoda; Yoichi Muraoka (SIGIR, 1998)