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- [4] ROTATION SPECTRUM OF PN ZEITSCHRIFT FUR NATURFORSCHUNG PART A-ASTROPHYSIK PHYSIK UND PHYSIKALISCHE CHEMIE, 1972, A 27 (04): : 703 - &
- [5] The equilibrium between phosphorus para-nitride (PN)(n) and biatomic PN molecules, deduced from the band spectrum. COMPTES RENDUS HEBDOMADAIRES DES SEANCES DE L ACADEMIE DES SCIENCES, 1939, 209 : 207 - 209