@proceedings{
    icann91,
    editor = {Kohonen, Teuvo and M{\"a}kisara, Kai and Simula, Olli and Kangas, Jari},
    publisher = "North-Holland",
    title = "Proceedings of the International Conference on Artificial Neural Networks",
    booktitle = "Proceedings of the International Conference on Artificial Neural Networks",
    address = "Espoo, Finland",
    month = "June",
    year = "1991",
    organization = "ENNS"
}