I do not have any research material, as I just buy mine in Moscow in Arbat street, which is really the place to go for Russian watches :lol:
It is Poljot for us Westerners BTW
But if you are interestede in looking/buying, do check out Julian Kampmann at Poljot24.de
He has loads of Poljots, Vostoks etc and is a nice chap to boot. He speaks English.
Russian watches rock (after a little adjustment :P )