@article{Kashiwara_1978,
    doi = {10.1007/bf01403082},
    url = {https://doi.org/10.1007%2Fbf01403082},
    year = {1978},
    month = {jun},
    publisher = {Springer Science and Business Media {LLC}},
    volume = {49},
    number = {2},
    pages = {121--135},
    author = {Masaki Kashiwara},
    title = {On the holonomic systems of linear differential equations, {II}},
    journal = {Inventiones Mathematicae}
}

@article{Kashiwara_1978, doi = {10.1007/bf01403082}, url = {https://doi.org/10.1007%2Fbf01403082}, year = {1978}, month = {jun}, publisher = {Springer Science and Business Media {LLC}}, volume = {49}, number = {2}, pages = {121--135}, author = {Masaki Kashiwara}, title = {On the holonomic systems of linear differential equations, {II}}, journal = {Inventiones Mathematicae} }