Optimization of the alignment position for SPAD-detector calibrationDhoska, Klodian; Hofer, Helmuth; Lopez, Marco; Kübarsepp, Toomas; Kück, StefanDoctoral School of Energy and Geotechnology II : closing conference of the project : Pärnu, Estonia, January 12-17, 20152015 / p. 201-202 : ill