International Symposium on Beamed Energy Propulsion (7th : 2011 : Ludwigsburg, Germany)
Beamed energy propulsion : seventh international symposium, Ludwigsburg, Germany, 10-14 April 2011 / editors, Hans-Albert Eckel, Stefan Scharring.
Beamed-energy propulsion -- Congresses.
Eckel, Hans-Albert.
Scharring, Stefan.