@article{Morgenstern_1973,
    doi = {10.1145/321752.321761},
    url = {https://doi.org/10.1145%2F321752.321761},
    year = {1973},
    month = {apr},
    publisher = {Association for Computing Machinery ({ACM})},
    volume = {20},
    number = {2},
    pages = {305--306},
    author = {Jacques Morgenstern},
    title = {Note on a Lower Bound on the Linear Complexity of the Fast Fourier Transform},
    journal = {Journal of the {ACM}}
}

@article{Morgenstern_1973, doi = {10.1145/321752.321761}, url = {https://doi.org/10.1145%2F321752.321761}, year = {1973}, month = {apr}, publisher = {Association for Computing Machinery ({ACM})}, volume = {20}, number = {2}, pages = {305--306}, author = {Jacques Morgenstern}, title = {Note on a Lower Bound on the Linear Complexity of the Fast Fourier Transform}, journal = {Journal of the {ACM}} }