More works by Tatiana Kiseleva is in the collection of Michael Alshibaya. He even arranged her exhibition:
Tatyana Kiseleva 2004. Paintings, drawings, sculpture from the collection of Michael Alshibaya. State Institute of Art. Moscow
Alain kindly gave can credit his collection of "our heritage":
http://www.nasledie-rus.ru/gallery/ex05.php
Just think, he is unlikely to agree to sell, though, who knows? ..