Christian Hirt
- Results from the Third QDaedalus Astrogeodetic System Observation Campaign in the Mountainous Terrain of the Surses Region in Switzerland. In: Journal of Surveying Engineering (ASCE), v. 149, n. 3 (August 2023). (2023):
- Modern Determination of Vertical Deflections Using Digital Zenith Cameras. In: Journal of Surveying Engineering (ASCE), v. 136, n. 1 (Februar 2010). (2010):