Vickers AD, Palmer SCF. The influence of canopy cover and other factors upon regeneration of Scots pine and associated ground flora within Glen Tanar NNR. Forestry (Lond). 2000;73(1):37-49.
Suit HD, Sedlacek R, Fagundes L, Goitein M, Rothman KJ. Time distribution of recurrences of an immunogenic and non-immunogenic tumor following local irradiation. Radiat Res. 1978 Feb;73(2):251-66.