1. Bailly, F., Longo, G.: Space, time and cognition. From the standpoint of mathematics and natural science. Invited paper. In: Peruzzi (ed) Mind and Causality, pp. 149–199. Benjamins, Amsterdam (2004). (downloadable from https://www.di.ens.fr/users/longo/download.html)
2. Poincaré, H.: Science and Hypothesis, Londres et Newcastle-on-Tyne. The Walter Scott publ. Co., Ltd (1902)
3. Poincaré, H.: La Valeur de la Science. Champs Flammarion, Paris (1905)
4. Berthoz, A.: Le Sens du Mouvement. Odile Jacob, Paris (1997)
5. Longo, G.: Space and time in the foundations of mathematics, or some challenges in the interactions with other sciences. Invited lecture, First AMS/SMF meeting, Lyon, July (2001). (downloadable from https://www.di.ens.fr/users/longo/download.html)