%0 Journal Article %T Long-term photospheric instabilities and envelopes dynamics in the post-AGB binary system 89 Herculis %A Gangi,, M %A Giarrusso,, M %A Munari,, M %A Ferrara,, C %A Scalia,, C %A Leone,, F %J Monthly Notices of the Royal Astronomical Society %V 500 %N 1 %P 926-941 %@ 0035-8711 %D 2020-11-10 %I The Royal Astronomical Society %~ DeepDyve