Acoustic Transducers as Passive Cooperative Targets for Wireless Sensing of the Sub-Surface World: Challenges of Probing with Ground Penetrating RADAR. - Jean-Michel Friedt; Gilles Martin; Gwenhael Goavec-Mérou; David Rabus; Sébastien Alzuaga; Lilia Arapan; Marianne Sagnard; Émile Carry (Sensors, 2018)