Internet Electronic Journal of Molecular Design, special issues dedicated to Professor Haruo Hosoya on the occasion of the 65th birthday: Volume 1 (2002), Number 9 — Volume 2 (2003), Number 6.
doi.org
Hosoya, Haruo (1971), "Topological index. A newly proposed quantity characterizing the topological nature of structural isomers of saturated hydrocarbons", Bulletin of the Chemical Society of Japan, 44 (9): 2332–2339, doi:10.1246/bcsj.44.2332.