@article{tsuno1973,
    Author = {Tsuno, Yoshimichi},
    File = {On a Class of Differential Operators with Polynomial Coefficients - euclid.hmj.1206137442 - a - a - a - l.pdf},
    Journal = {Hiroshima Math. J.},
    Number = {1},
    Pages = {69--79},
    Publisher = {Hiroshima University, Department of Mathematics},
    Title = {On a class of differential operators with polynomial coefficients},
    URL = {https://doi.org/10.32917/hmj/1206137442},
    Volume = {3},
    Year = {1973},
    bdsk-url-1 = {https://doi.org/10.32917/hmj/1206137442},
    date-added = {2020-03-01 19:06:49 +0100},
    date-modified = {2020-03-01 19:06:49 +0100},
    fjournal = {Hiroshima Mathematical Journal},
    doi = {10.32917/hmj/1206137442}
}

@article{tsuno1973, Author = {Tsuno, Yoshimichi}, File = {On a Class of Differential Operators with Polynomial Coefficients - euclid.hmj.1206137442 - a - a - a - l.pdf}, Journal = {Hiroshima Math. J.}, Number = {1}, Pages = {69--79}, Publisher = {Hiroshima University, Department of Mathematics}, Title = {On a class of differential operators with polynomial coefficients}, URL = {https://doi.org/10.32917/hmj/1206137442}, Volume = {3}, Year = {1973}, bdsk-url-1 = {https://doi.org/10.32917/hmj/1206137442}, date-added = {2020-03-01 19:06:49 +0100}, date-modified = {2020-03-01 19:06:49 +0100}, fjournal = {Hiroshima Mathematical Journal}, doi = {10.32917/hmj/1206137442} }