Nikita Lobanov
He is a collector of costume and stage designs by Russian artists ( 1890–1930s ) , including Sergei Diaghilev's Ballets Russes . 
<triplet> Sergei Diaghilev <subj> Ballets Russes <obj> notable work <triplet> Ballets Russes <subj> Sergei Diaghilev <obj> named after