Timing of the accreting millisecond pulsar IGR J17591–2342: evidence of spin-down during accretion. - Sanna, A; Burderi, L; Gendreau, K C; Di Salvo, T; Ray, P S; Riggio, A; Gambino, A F; Iaria, R; Piga, L; Malacaria, C; Jaisawal, G K (Monthly Notices of the Royal Astronomical Society, 2020)