@article{KleinpeterHilfertKoch2000,
  author    = {Erich Kleinpeter and Liane Hilfert and Andreas Koch},
  title     = {GIAO-HF/DFT calculation of C-13 and N-15 chemical shifts for studying tautomerism and intramolecular hydrogen bonding in 2,3-disubstituted quinoxalines},
  year      = {2000},
}