(:notitlegroup:) 

   @inproceedings{djapic2013,
    title     = {Novel Method for Underwater Navigation Aiding Using a Companion Underwater
                Robot as a Guiding Platforms},
    booktitle = {2013 MTS/IEEE OCEANS - Bergen},
    author    = {Vladimir Djapic and Dula Nad and Gabriele Ferri and Edmin Omerdic and Gerard
                 Dooly and Dan Toal and Zoran Vukic},
    pages     = {1-10},
    month     = {June},
    year      = {2013},
    keywords  = {autonomous underwater vehicles;control engineering computing;mobile
                robots;path planning;Italy;La Spezia;MCM chain;collaborating underwater
                vehicles;companion underwater robot;identification event;intervention
                event;mine countermeasures chain;multivehicle cooperation;reacquisition
                event;underwater navigation method;unmanned robotic platforms;Robot sensing
                systems;Sonar;Sonar navigation;Three-dimensional displays;Vehicles},
    abstract  = {This paper presents the results of multi-national collaboration during the sea
                trial held in the coastal waters of La Spezia, Italy, in the period 17 Oct. -
                07 Nov. 2012. The trial was performed as one of the objectives of the program
                which has a goal to achieve the entire chain of Mine Countermeasures (MCM)
                using unmanned, robotic platforms. The focus of activities in this sea trial
                was to perform the last events of the mission: reacquisition, identification
                and intervention using a pair of collaborating underwater vehicles. The
                trial's objectives were to combine the expertise and robotic systems from
                different partners and achieve a mission of precise guiding of an inexpensive
                underwater vehicle to an underwater target using the navigation suite and
                control system of a more capable underwater vehicle. The objectives were
                accomplished and the researchers' opinion is that the extension to
                multi-vehicle cooperation (one leader guiding several agents, or followers) is
                feasible given the test results.}}