Bogdanskii, Y. V. “Laplacian With Respect to a Measure on a Hilbert Space and an <i>L </i><sub>2</Sub&gt;-Version of the Dirichlet Problem for the Poisson Equation”. Ukrains’kyi Matematychnyi Zhurnal, Vol. 63, no. 9, Sept. 2011, pp. 1169-78, https://umj.imath.kiev.ua/index.php/umj/article/view/2795.