%0 Journal Article %A A. N. Zemlyakov %T Elective Course ``Calculus of Reality". Differential Equations as Mathematical Models of Real Processes. Chapter 1 %J Matematičeskoe obrazovanie %D 2004 %P 19-55 %V 31 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/MO_2004_31_4_a1/ %G ru %F MO_2004_31_4_a1