HCN/HNC chemistry in shocks: a study of L1157-B1 with ASAI. - Lefloch, B; Busquet, G; Viti, S; Vastel, C; Mendoza, E; Benedettini, M; Codella, C; Podio, L; Schutzer, A; Rivera-Ortiz, P R; Lépine, J R D; Bachiller, R (Monthly Notices of the Royal Astronomical Society, 2021)