8Montero G,Ca/iellas I,Ortega C,et al. Results from a thinning experiment in a Scots pine (Pinus sylvestris L.) natural regeneration stand in the Sistema Ib6rico Mountain Range (Spain). Forest Ecology and Management, 2001,145 (1/2):151-161.
9Cafiellas I,Rio M D,Roig S,et al. Growth response to thinning in Quercus pyrenaica Willd. coppice stands in Spanish central mountain. Annals of Forest Science, 2004,61 (3) :243 -250.