%0 Journal Article %A M. Ilyin %A P. Kulish %A V. Lyakhovsky %T Folded fans and string functions %J Zapiski Nauchnykh Seminarov POMI %D 2010 %P 197-212 %V 374 %I mathdoc %U http://geodesic.mathdoc.fr/item/ZNSL_2010_374_a10/ %G en %F ZNSL_2010_374_a10