%0 Journal Article %A P. G. Grinevich %A A. Yu. Orlov %T Variations of the complex structure of Riemann surfaces by vector fields on a contour and objects of the KP theory. The Krichever--Novikov problem of the action on the Baker--Akhieser functions %J Funkcionalʹnyj analiz i ego priloženiâ %D 1990 %P 72-73 %V 24 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/FAA_1990_24_1_a11/ %G ru %F FAA_1990_24_1_a11