HCNH+ abundance in cold dense clouds based on the first hyperfine resolved rate coefficients Cheikh T. Bop, Marcelino Agúndez, Jose Cernicharo, Bertrand Lefloch and François Lique A&A, 681 (2024) L19 Published online: 23 January 2024 DOI: 10.1051/0004-6361/202348947