%0 Journal Article %A A. L. Fel'shtyn %T A new zeta-function in Nielsen's theory and a universal product formula for dynamical zeta-functions %J Funkcionalʹnyj analiz i ego priloženiâ %D 1987 %P 90-91 %V 21 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/FAA_1987_21_2_a18/ %G ru %F FAA_1987_21_2_a18