A Comparison of Precise Leveling and Persistent Scatterer SAR Interferometry for Building Subsidence Rate Measurement. - Kirsi Karila; Mika Karjalainen; Juha Hyyppä; Jarkko Koskinen; Veikko Saaranen; Paavo Rouhiainen (ISPRS Int. J. Geo Inf., 2013)