@INPROCEEDINGS { steelskaplan:99b, address = {Berlin},author = {Steels, Luc and Kaplan, Frédéric},booktitle = {Advances in Artificial Life: 5th European Conference (ECAL 99)},editor = {Floreano, D. and Nicoud, J-D and Mondada, F.},note = {Language},pages = {679--688},publisher = {Springer-Verlag},series = {Lecture Notes in Artificial Intelligence 1674},title = {Collective learning and semiotic dynamics},type = {INPROCEEDINGS},year = {1999},}