On the Local Behavior of Solutions of Non-Parabolic Partial Differential Equations: II. The Uniqueness of the Green Singularity
Philip E. Hartman, Aurel Wintner · American Journal of Mathematics · 1954
Philip Hartman, Aurel Wintner, On the Local Behavior of Solutions of Non-Parabolic Partial Differential Equations: II. The Uniqueness of the Green Singularity, American Journal of Mathematics, Vol. 76, No. 2 (Apr., 1954), pp. 351-361