TY - JOUR AU - Assi N'Guessan TI - Constrained covariance matrix estimation in road accident modelling with Schur complements JO - Comptes Rendus. Mathématique PY - 2003 SP - 219 EP - 222 VL - 337 IS - 3 PB - Elsevier DO - 10.1016/S1631-073X(03)00309-1 LA - en ID - CRMATH_2003__337_3_219_0 ER -