• [1] H. Levi, On the structure of differential polynomials and on their theory of ideals, Trans. Amer. Math. Soc. 51 (1942), 532-568. MR 0006163 (3:264f)
• [2] D. G. Mead, Differential ideals, Proc. Amer. Math. Soc. 6 (1955), 420-432. MR 0071417 (17:123d)
• [3] K. B. O'Keefe, A symmetry theorem for the differential ideal [uv], Proc. Amer. Math. Soc. 12 (1961), 654-657. MR 0130249 (24:A115)

Bibliography

[1]

H. Levi, On the structure of differential polynomials and on their theory of ideals, Trans. Amer. Math. Soc. 51 (1942), 532-568. MR 0006163 (3:264f)

[2]

D. G. Mead, Differential ideals, Proc. Amer. Math. Soc. 6 (1955), 420-432. MR 0071417 (17:123d)

[3]

K. B. O'Keefe, A symmetry theorem for the differential ideal [uv], Proc. Amer. Math. Soc. 12 (1961), 654-657. MR 0130249 (24:A115)