A.  Bicchi, Bergamasco, M., Dario, P., and Fiorillo, A., ?Integrated Tactile Sensing for Gripper Fingers?, in Proc. Int. Conf. on Robot Vision and Sensory Control, Zuerich, Switzerland, 1988. 

P.  Dario, Bicchi, A., Femi, D., and Fiorillo, A., ?Multiple Sensing Fingertip for Robot Active Touch?, in Proc. Int. Conf. on Advanced Robotics, Versailles, France, 1987.