The Astrophysical Journal Letters: 2018, vol: 853, issue:
1)- J Cernicharo, B Lefloch, M Agúndez, S Bailleux, L Margulès, E Roueff, R Bachiller, N Marcelino, B Tercero, C Vastel, E Caux. Discovery of the Ubiquitous Cation NS in Space Confirmed by Laboratory Spectroscopy.The astrophysical journal. Letters. 2018, 853: