PUIA, I., and P. GUS. “Determining Pedo-Ecological Factors of a Phytocenosis Complex (Sintereag, The Valley of Sieu)”. Notulae Botanicae Horti Agrobotanici Cluj-Napoca, Vol. 8, no. 2, Aug. 1976, pp. 69-75, doi:10.15835/nbha8258.