TY - SLIDE KW - annual seminar AU - D.D. Holm AU - C. Cotter BT - ECMWF Annual Seminar 2013 C1 - Events DA - 2013 LA - eng PY - 2013 T2 - ECMWF Annual Seminar 2013 T3 - ECMWF Annual Seminar TI - Variational formulations of soundproof models ER -