1. Bugaev V.A., Musievsky A.L., Yesipov N.V., Longevity and sustainability of Shilov forest oak trees. Problems of degradation of oak forests and modern systems of forest management in them: proceedings of the scientific-practical seminar, 28–30 March 2007, 50–53 (2007)
2. Zusman L.L., Itin L.I., Ulitsky L.I., Economics of Socialist Industry: Textbook E40 for econ. specialities of universities. 6th ed., rev. and supplement, 495 (1980)
3. Boardman A.D., Cost-Benefit Analysis: Concepts and Practice. Second edition (2001)