Sužiedelytė-Visockienė, Jūratė. “Definitions Influence for Digital Photocamera Parameters of Calibration on Transformation of Photos in the Plane”. Geodesy and Cartography, vol. 33, no. 1, Aug. 2012, pp. 26-30, https://doi.org/10.3846/13921541.2007.9636712.