Kambezidis H.D., Psiloglou B. E., Gavriil A., Petrinoli K., Detection of Upper and Lower Planetary-Boundary Layer Curves and Estimation of their Heights from Ceilometer Observations under All-weather Conditions: Case of Athens, Greece, Remote Sensing, 13, 2175-2204, 2021. DOI: 10.3390/rs13112175