29. The experts from IMMA and OICA introduced GRB-57-12 and GRB-57-18, listing the current acronyms and abbreviation in UN Regulations under the responsibilities of GRB. GRB agreed to resume discussion at its September 2013 session on the basis of informal documents provided by the expert from CLEPA concerning UN Regulations Nos. 59 and 28, and by the expert from EC concerning QRTV.