%0 Journal Article %A Lixin Liu %T On the length spectrums of non-compact Riemann surfaces %J Annales Fennici Mathematici %D 1999 %P 11-22 %V 24 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/AFM_1999_24_1_a1/ %G en %F AFM_1999_24_1_a1