%0 Journal Article %T A characterization of the essential pseudospectra on a Banach space %A Aymen Ammar %A Aref Jeribi %J Arabian Journal of Mathematics %@ 2193-5351 %D 2013 %I %R 10.1007/s40065-012-0065-7 %K 47A53 %K 47A55 %K 54B35 %K 47A13 %U http://link.springer.com/article/10.1007/s40065-012-0065-7