%0 Journal Article %A A. N. Zemlyakov %T Elective Course ``Calculus of Reality". Differential Equations as Mathematical Models of Real Processes. Chapter 2 %J Matematičeskoe obrazovanie %D 2005 %P 9-65 %V 32 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/MO_2005_32_1_a2/ %G ru %F MO_2005_32_1_a2