On the Magnetic Properties of 1D and 2D Heisenberg Systems / B.V.Karpenko et al. // Trends in Magnetism: Euro-Asian Symposium (EASTMAG-2001) = Прогресс в магнетизме, Евро-Азиатский Симпозиум, February 27 - March 2, 2001 / Institute of Metal Physics of the Ural Division of the RAS. - Ekaterinburg, 2001. - P. 341.