@article{ChristlLeiningerBrunn1982,
  author    = {Manfred Christl and Hartmut Leininger and Erich Brunn},
  title     = {Carbon-13 Nuclear Magnetic Resonance Spectra of 7-Heterotetracyclo[4.1.0.0<sup>2,4</sup>.0<sup>3,5</sup>]heptanes. Annelation Effects of Aziridine, Oxirane, and Thiirane Rings. Unusual gamma and delta Substituent Effects},
  year      = {1982},
}