Single- and Multi-Date Crop Identification Using PROBA-V 100 and 300 m S1 Products on Zlatia Test Site, Bulgaria. - Eugenia Roumenina; Clement Atzberger; Vassil Vassilev; Petar Dimitrov; Ilina Kamenova; Martin Banov; Lachezar Filchev; Georgi Jelev (Remote. Sens., 2015)