In recent years? Clancy had them using one in "Red storm Rising", which was the second book he wrote. Right after "Hunt for Red October". "Storm" was first published 22 years ago.
Soviet Naval Tactics by Milan N. Vego, Published by the Naval Institute Press in 1992 describes Soviet use of them.
I’m talking about Russian export sales. I know they used them for military deployments, but IIRC the use of ROROs to ship their tanks to customers is somewhat new.