Scientists and engineers who are interested to organize a minisymposium within the 9^th GRACM International Congress, can send a proposal as soon as possible (and in every case before the 15 January 2018) to the Congress e-mail 9gracm@isc.tuc.gr for approval. In this case the minisymposia organizers will be mainly responsible to invite possible participants and arrange the program of their minisymposium.