The work is very similar to etching, especially from afar.
However, if you look closely , you can see that it is mixed media. In my estimation - ink , black watercolor, white .
My opinion coincides with the point of view of experts auction house " Scoop " :
http://sovcom.ru/index.php?category=...r&painter=1527.
This work can be seen on this site Artinvestment.ru in the " Artists and prices" :
http://artinvestment.ru/auctions/405...l?first_letter =%D0%91 & citems = 41474327 & wc = 13