On a Property of the Laplacian of a Function in a Two Dimensional Bounded Domain, When the First Derivatives of the Function Vanish at the Boundary
J. Kampé de Fériet · Mathematics Magazine · 1947
J. Kampe De Feriet, On a Property of the Laplacian of a Function in a Two Dimensional Bounded Domain, When the First Derivatives of the Function Vanish at the Boundary, Mathematics Magazine, Vol. 21, No. 2 (Nov. - Dec., 1947), pp. 74-79