IN REFERENCE TO

Bulgarian 

що се отнася до (as regards, re, with regard to), във връзка с (in respect to, over, with reference to, with respect to). (various references)

Hungarian

vmivel kapcsolatban (in connection with sg, in reference to sg, on the score of sg), vmire vonatkozóan (in reference to sg, in the matter of sg, relevantly). (various references)

Pig Latin

inay eferenceray otay.(various references)

Romanian

cu referire la (with reference to). (various references)

Russian 

что касается (as regards, as to, in respect of, quoad, with reference to). (various references)