Source: ramnews.ru → — a photo gallery from an event both Yakimovich and Sergey attended, though not pictured together in the same shot.
Sources: web.archive.org → — Yakimovich's mail.ru profile; web.archive.org → — Alexey Filatov VK.
Sources: web.archive.org → — military contract ad; web.archive.org → — Yelabuga ad; web.archive.org → — Rusich ad.
Source: my.mail.ru → — “100 years of the GRU Spetsnaz.”
See also: Sergey Gavrilov → — the other figure photographed with Yakimovich and Batarchukov at that same ceremony.
