O. Paulzen, and P. Perc. Enabling Organisations and Society through Information Systems, Proceedings of the 13th Australasian Conference on Information Systems (ACIS 2002), page 243-253. Melbourne, (2002)
P. Peebles. (1998)cite arxiv:astro-ph/9806201
Comment: 18 pages, 3 figures, 1 table, in les Rencontres de Physique de la
Vallee d Aosta (1998) ed. M. Greco.