Trigkakis_et_al_ISPRS Int. J. Geo-Inf._9(7)_2020.pdfhttp://purl.tuc.gr/dl/dias/60C0D66B-EDFA-4FEB-A865-8FAF9D1662AAAutomated geolocation in urban environments using a simple camera-equipped Unmanned Aerial Vehicle: a rapid mapping surveying alternative?free2021-07-14application/pdf3.2 MB