1. Bahuchet, Serge (1993). La Rencontre avec des Agriculteurs: Les Pygmées parmi les peuples d’Afrique Centrale (Histoire d’une civilisation forestière 2), Peeters. SELAF 344. Ethnosciences 9.
2. Bahuchet, Serge (2006). Historical Linguistics and Hunter-Gatherers Populations in Global Perspective, Max Planck Institute.
3. Changing language, remaining Pygmy;Bahuchet;Human Biology,2012
4. Another R-tickle;Barry;Journal of International Phonetics Association,1997
5. Barry, William John, and Russo, Michela (2002). Lambdacismo e Rotacismo in area Napoletana: Realizzazione Fonetica e Posizione Fonologica, 29o Convegno Nazionle dell’Associazione Italiana di Acustica, Ferrara, Italy, 12–14 Giugno, Arti Grafiche Padovane.