Key points are not available for this paper at this time.
Article Chemical Composition of Some Pinus sylvestris L. Oleoresins from Southern Serbia, Bosnia and Makedonia. Two Entities of Scotch Pine Present on the Balkan Peninsula was published on January 1, 1993 in the journal Holzforschung (volume 47, issue 3).
Lange et al. (Fri,) studied this question.