Essential self-adjointness of an infinite-dimensional operator
N. N. Frolov

This publication is cited in the following articles:

1. Yu. M. Berezanskii, “Self-adjoint infinite-dimensional elliptic differential operators with a singular potential”, Funct. Anal. Appl., 16:4 (1982), 286–287          
2. N. N. Frolov, “Self-adjointness of elliptic operators with infinitely many variables”, Funct. Anal. Appl., 14:1 (1980), 71–72