PUIA, I. and GUS, P. 1976. Determining pedo-ecological factors of a phytocenosis complex (Sintereag, The Valley of Sieu). Notulae Botanicae Horti Agrobotanici Cluj-Napoca. 8, 2 (Aug. 1976), 69–75. DOI:https://doi.org/10.15835/nbha8258.