Stocki, J. 1998 Szkodniki owadzie bukow w Bieszczadzkim Parku Narodowym. [Insect pests on beech trees in the Bieszczady National Park.]. Sylwan 142: 85-98.

Notes: An analysis of insects, their parts, and feeding traces were collected from all parts of trees, and defoliating, secondary, and 'technical' pests on the bark and wood identified. Insect species found most frequently included Cryptococcus fagi (C. fagisuga). The report contains seven factors outlining the role played by humans in the weakening of the health condition of beech trees growing in this park.