Institution: | (1) IME-USP, cp 66281, 05508-090 São Paulo, SP, Brasil;(2) CPhT, CNRS-Ecole Polytechnique, 91128 Palaiseau Cedex, France;(3) Faculteit Wiskunde en Informatica, Technische Universiteit Eindhoven, Postbus 513, 5600 MB Eindhoven, The Netherlands;(4) Philips Research Laboratories, Prof. Holstlaan 4, 5656 AA Eindhoven, The Netherlands |