Marco Patriarca got his PhD from the University of Perugia in 1993 on nonequilibrium classical and quantum diffusion. He is currently working as senior researcher at the National Institute of Chemical Physics and Biophysics, Tallinn, Estonia. His areas of interest includes stochastic processes, diffusion processes, brownian motion , condensed matter, quantum mechanics and physics of language. Els Heinsalu got her PhD from the University of Tartu in 2008 in Theoretical Physics. She worked on important topics, including stochastic resonance, individual based models, and complex systems at IFISC and at Niels Bohr International Academy. She is currently holding a position of senior researcher at the National Institute of Chemical Physics and Biophysics Tallinn, Estonia. Her areas of interest are statistical physics and its applications to complex systems, modeling of language competition and stochastic processes. Jean Leó Leonard got his PhD. From Université de Provence in 1991 on empirical sociolinguistics,. He was initially trained as a Finno-Ugrist, on Finnic languages, especially Finnish and Estonian, at Inalco. Since 1991 he has carried on fieldwork and theoretical research on several languages and dialects including Mesoamerican languages (Mayan, Otomanguean, Totonaco-Tepehua and Huave). He has been developing interdisciplinary research for dialectology and Complexity Theory since 2010. He is currently holding the position of full professor of Linguistic Typology and Linguistic Diversity at Paris-Sorbonne University.

• Preface; 1. Introduction; 2. Language and languages; 3. Comparison based on string metric; 4. Historical glottometry; 5. Introduction to languages dynamics; 6. Languages evolution models; 7. Languages competition models; Bibliography.