References

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Engelking P. General Topology. Mir, Moskow, 1986. (in Russian)

Maslyuchenko V., Voloshyn H. Closure of the set of polynomials in the space of separately continuous functions. In: Proc. of the Intern. Conf. dedicated to the 120th anniversary of S. Banach, Lviv, Ukraine, September 1721, 2012, Lviv, 2012, 97.

Maslyuchenko V.K. First types of topological vector spaces. Ruta, Chernivtsi, 2002. (in Ukrainian)