BUŠINA, František. Natural regeneration of Douglas fir (Pseudotsuga menziesii [Mirb.] Franco) in forest stands of Hurky Training Forest District, Higher Forestry School and Secondary Forestry School in Písek. In Journal of forest science. - Praha : Ústav zemědělských a potravinářských informací, 2007. ISSN 1212-4834, 2007, vol. 53, no. 1, s. 20-34.