TY - JOUR A1 - Romanova, N. N. T1 - Hamiltonian approach to the derivation of evolution equations for wave trains in weakly unstable media JO - Nonlin. Processes Geophys. J1 - NPG VL - 5 IS - 4 SP - 241 EP - 253 Y1 - 1998/12/31 PB - Copernicus Publications SN - 1607-7946 UR - https://npg.copernicus.org/articles/5/241/1998/ L1 - https://npg.copernicus.org/articles/5/241/1998/npg-5-241-1998.pdf DO - 10.5194/npg-5-241-1998 ER -