Lembo, L. J.; H. Helm; D. L. Huestis (1989). "Measurement of vibrational frequencies of the H3 molecule using two-step photoionization". The Journal of Chemical Physics. 90 (10): 5299. Bibcode:1989JChPh..90.5299L. doi:10.1063/1.456434. ISSN0021-9606.
Defranceschi, M.; M. Suard; G. Berthier (1984). "Numerical solution of Hartree–Fock equations for a polyatomic molecule: Linear H3 in momentum space". International Journal of Quantum Chemistry. 25 (5): 863–867. doi:10.1002/qua.560250508. ISSN0020-7608.
Lembo, L. J.; H. Helm; D. L. Huestis (1989). "Measurement of vibrational frequencies of the H3 molecule using two-step photoionization". The Journal of Chemical Physics. 90 (10): 5299. Bibcode:1989JChPh..90.5299L. doi:10.1063/1.456434. ISSN0021-9606.
Lembo, L. J.; H. Helm; D. L. Huestis (1989). "Measurement of vibrational frequencies of the H3 molecule using two-step photoionization". The Journal of Chemical Physics. 90 (10): 5299. Bibcode:1989JChPh..90.5299L. doi:10.1063/1.456434. ISSN0021-9606.
Defranceschi, M.; M. Suard; G. Berthier (1984). "Numerical solution of Hartree–Fock equations for a polyatomic molecule: Linear H3 in momentum space". International Journal of Quantum Chemistry. 25 (5): 863–867. doi:10.1002/qua.560250508. ISSN0020-7608.