Xue, Y., W. Zhang, C. Ma, L. Ma, and J. Zhou. “Relative Importance of Various Regeneration Mechanisms in Different Restoration Stages of Quercus Variabilis Forest After Selective Logging”. Forest Systems, Vol. 23, no. 2, Aug. 2014, pp. 199-08, doi:10.5424/fs/2014232-03263.