We are very pleased to announce that Roman Guliaev has successfully completed his PhD exam at ETH Zurich today, November 22, 2023! His thesis is titled "Integration of polarimetric, interferometric and tomographic SAR information to improve forest structure estimation". The doctoral degree "Dr. sc." is awarded at ETH Zurich by the Department of Civil, Environmental and Geomatic Engineering (D-BAUG). Congratulations, Roman!