TY - JOUR AU - Lu Deng AU - Guoxiang Huang C2 - European Physical Journal D DA - 2009-08-15 DO - https://doi.org/10.1140/epjd/e2009-00233-3 LA - en M1 - 55 PB - European Physical Journal D PY - 2009 TI - Dynamics of coupled ultraslow optical solitons in a coherent four-state double-¿ system ER -