I'll try, but suddenly work again, an educated bet
1 Serebryakova
2 Monticelli?
3 Yakovlev
4 Adrianssen
5 Larionov
6 Boudin?
7 Korovin?
8 Van Gogh?
9 Konchalovsky
10 Marriage
11 Rabin?
12 Buffet?
13 Shapoval
14 Shterenberg
15 Fabritus?
16 Falk
17 Mane
18 Picasso?
19 Bel?
20 Sutin