@article{StaikovaEngelsPericetal.1993,
  author    = {M. Staikova and Bernd Engels and M. Peric and S. D. Peyerimhoff},
  title     = {Ab initio calculation of the vibronically averaged hyperfine coupling constants in the two lowest electronic states of H\(_2\)O\(^+\)},
  year      = {1993},
}