PENNISI, Andrea; BLOISI, Dominico; GAZ, Claudio; IOCCHI, Luca a NARDI, Daniele. Novel Patterns and Methods for Zooming Camera Calibration. Václav Skala - Union Agency, 2013. Dostupné také z: http://wscg.zcu.cz/WSCG2013/!_2013_J_WSCG-1.pdf.