TY - JOUR AU - Shun Ohkubo TI - A ring of periods for Sen modules in the imperfect residue field case JO - Comptes Rendus. Mathématique PY - 2010 SP - 601 EP - 603 VL - 348 IS - 11-12 PB - Elsevier DO - 10.1016/j.crma.2010.04.020 LA - en ID - CRMATH_2010__348_11-12_601_0 ER -