Y. V. Bogdanskii, “Laplacian with respect to a measure on a Hilbert space and an L 2-version of the Dirichlet problem for the Poisson equation”, Ukr. Mat. Zhurn., vol. 63, no. 9, pp. 1169–1178, Sep. 2011, Accessed: Feb. 16, 2026. [Online]. Available: https://umj.imath.kiev.ua/index.php/umj/article/view/2795