Li, Z.-L., Bonifaci, N., Denat, A., Atrazhev, V., Shakhatov, V., & Haeften, K. von. (2011). Atomic and molecular spectra emitted by normal liquid 4He excited by corona discharge. ФІЗИКА НИЗЬКИХ ТЕМПЕРАТУР, 37(5), 484–490. https://doi.org/10.1063/1.3599651