Demostration of Taimanov's Extension Theorem

[heras1985]

I need the demostration of the Taimanov's extension theorem:
This theorem said:
Let $$A$$ be dense in the $$T_1$$-space $$X$$. Then in order that a continuos function $$f$$ from $$X$$ into a compact space $$Y$$ have a continuous extension $$f^*:X\rightarrow Y$$ if and only if that for each two disjoint closed sets $$F_1$$ and $$F_2$$, $$f^{-1}[F_1]$$ and $$f^{-1}[F_2]$$ have disjoint closures in $$X$$.
Where can I find the demostration of this theorem?
Thanks

 

[fresh_42]

How good is your Russian?
http://www.mathnet.ru/links/6cecb0e791a942c90957508c44781b26/sm5540.pdf
It seems that it's only available as the original or in some standard books on general topology like Ryszard Engelking's General Topology (Theorem 3.2.1)
https://www.amazon.com/dp/3885380064/?tag=pfamazon01-20