Kämpgen, Andreas, David Helten, Klaus Pottler, and Marc Röger. “Advanced Drone-Based Alignment Measurements for Parabolic Trough Collectors: Optical Inspection of Solar Field Installation”. SolarPACES Conference Proceedings 3 (August 27, 2025). Accessed September 2, 2025. https://www.tib-op.org/ojs/index.php/solarpaces/article/view/2474.