Bonsall, F. F <br/><br/>
Numerical ranges II / 
by F. F. Bonsall and J. Duncan 
 - Cambridge :  Cambridge University Press,  1973 
 - vii, 179 p. ;  23 cm. 
 - London Mathematical Society lecture note series  10 .
<br/><br/> Continuation of the authors' Numerical ranges of operators on normed spaces and of elements of normed algebras. 
<br/><br/>Bibliography: p. 167-175. 
<br/><br/><label>ISBN: </label>0521202272 
<br/><br/><label>LCCN: </label>73-179782 //r882 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Normed linear spaces<br/>Banach algebras<br/>Linear operators