Boris Zemenkov (?), "Portrait of Anna Radlova" (?)
 

Dear experts, help me, please, with attribution.

I would say that it is more a portrait of Velimir Khlebnikov, than Anna Radlova.

agreed with Igor.

Thank you. There was, of course, and I have such a version. But, in the first confuses inscription bottom right. Unfortunately the lower right corner of lost and there was only part of the inscription. Secondly, why something like this once Khlebnikov - maybe someone want another. Little did they were such good looks. Still, a portrait of something, to put it mildly, not photorealistic.
As Radlova, it has not yet come across any of the images. Maybe it is exactly like in this picture ...

Scan from the book RUSSIAN LITERATURE OF THE XX CENTURY.