\input zb-basic \input zb-ioport \iteman{io-port 05815027} \itemau{Ducatelle, Frederick; Di Caro, Gianni A.; F\"orster, Alexander; Gambardella, Luca} \itemti{Mobile stigmergic markers for navigation in a heterogeneous robotic swarm.} \itemso{Dorigo, Marco (ed.) et al., Swarm intelligence. 7th international conference, ANTS 2010, Brussels, Belgium, September 8--10, 2010. Proceedings. Berlin: Springer (ISBN 978-3-642-15460-7/pbk). Lecture Notes in Computer Science 6234, 456-463 (2010).} \itemab Summary: We study self-organized navigation in a heterogeneous robotic swarm consisting of two types of robots: small wheeled robots, called foot-bots, and flying robots that can attach to the ceiling, called eye-bots. The task of foot-bots is to navigate back and forth between a source and a target location. The eye-bots are placed in a chain on the ceiling, connecting source and target using infrared communication. Their task is to guide foot-bots, by giving local directional instructions. The problem we address is how the positions of eye-bots and the directional instructions they give can be adapted, so that they indicate a path that is efficient for foot-bot navigation, also in the presence of obstacles. We propose an approach of mutual adaptation between foot-bots and eye-bots. Our solution is inspired by pheromone based navigation of ants, as eye-bots serve as mobile stigmergic markers for foot-bot navigation. \itemrv{~} \itemcc{} \itemut{} \itemli{doi:10.1007/978-3-642-15461-4\_44} \end