%0 Journal Article %A A. B. Vasil'eva %T Andrey Nikolaevich Tikhonov and his school for singular perturbation problem %J Matematičeskoe modelirovanie %D 2001 %P 6-9 %V 13 %N 12 %I mathdoc %U http://geodesic.mathdoc.fr/item/MM_2001_13_12_a1/ %G ru %F MM_2001_13_12_a1