[Official institutional letterhead] [date, place] TO WHOM IT MAY CONCERN, This letter is to confirm that [seconded researcher] has been on a research secondment from [home institution] to [host institution] for the period of [starting date] to [end date] in the context of EU IRSES project "Brazilian-European partnership in Dynamical Systems", FP7-PEOPLE-2012-IRSES 318999 BREUDS. Signed on behalf of [host or home institution] [name + position + signature]