@article{MetzgerTachibanaWuetal.1997,
  author    = {R. M. Metzger and H. Tachibana and X. Wu and Ulf H{\"o}pfner and Bin Chen and M. V. Lakshmikantham and Michael P. Cava},
  title     = {Is Ashwell`s zwitterion a molecular diode?},
  year      = {1997},
}