Starodubtsev, V.M., and R.M. Basarab. “Ecologic and Economic Estimation of Land Productivity Spatial Heterogeneity in Forest-Steppe Zone”. Resources and Environmental Economics 1, no. 1 (February 22, 2019): 39-42. Accessed April 15, 2024. https://www.syncsci.com/journal/REE/article/view/237.