%0 Journal Article %A A. I. Nazarov %T About ``one-dimensionality'' of the extremal in the Poincare inequality in the square %J Zapiski Nauchnykh Seminarov POMI %D 1999 %P 167-181 %V 259 %I mathdoc %U http://geodesic.mathdoc.fr/item/ZNSL_1999_259_a7/ %G ru %F ZNSL_1999_259_a7