TY - JOUR AU - Louisell, James TI - Delay differential systems with time-varying delay: new directions for stability theory JO - Kybernetika PY - 2001 SP - [239] VL - 37 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/KYB_2001__37_3_a2/ LA - en ID - KYB_2001__37_3_a2 ER -