KEY FACTORS DETERMINING THE ECOLOGICAL NICHE OF THE HIMALAYAN MARMOT, MARMOTA HIMALAYANA HODGSON (1841) Статья Nikol'skii A.A., Ulak A. Russian Journal of Ecology. Том 37. 2006. С. 46-52
THE NORMALITY OF SOME ELLIPTIC FUNCTIONAL-DIFFERENTIAL OPERATORS OF SECOND ORDER Статья Varfolomeev E.M. Russian Mathematical Surveys. Том 61. 2006. С. 184-185