LARA: A location-based and augmented reality assistive system for underground utilities' networks through GNSS. - Efstratios Stylianidis; Eleni Valari; Konstantinos Smagas; Alain Pagani; J. Henriques; Alejandro Garcia; Elisa Jimeno; I. Carrillo; Petros Patias; Charalampos Georgiadis; Anastasis Kounoudes; K. Michail (VSMM, 2016)