Named in memory of Pavel Mikhailovich Tret’yakov (1832–1898) and his brother Sergej Mikhailovich (1834–1892). Pavel founded the Art Gallery; Sergej presented his Western-European art collection to the city of Moscow. (M 24121) _ _.
Discovered on 19-9-1977 in Nauchnyj by Zhuravleva, L. V.