and Poor People, Language Diversity Endangered, Satya Dev Jha, 1986, p. 93. Lingua hruso Altri progetti Wikimedia Commons Wikimedia Commons contiene immagini

A history of Cynicism. Londra: Methuen. Dunn, J D G 1977. Unity and diversity in the New Testament. An enquiry into the character of earliest Christianity

Surowiecki, that says that when there are 4 parameters (independence, diversity of opinion, aggregation, decentralization), on average, judging by a crowd