TIMOFTE, A.I., PAMFIL, D., PALADA-NICOLAU, M. and TIMOFTE, C.S. 2011. The Effect of Different Factors upon the in vitro Propagation in Quercus robur and Q. frainetto by Somatic Embryogenesis. Notulae Botanicae Horti Agrobotanici Cluj-Napoca. 39, 1 (May 2011), 288–291. DOI:https://doi.org/10.15835/nbha3915481.