Freitas, Pedro. <br/><br/>
From Neumann to Steklov and beyond, via Robin :   the Weinberger way / 
Pedro Freitas and Richard S. Laugesen 
 - Baltimore, Maryland U.S.,   Johns Hopkins University Press,   June 2021.  
 - volume 143, pages 969-994. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics.<br/>Measurement.<br/>Functions.
<br/><br/><label>Dewey Class. No.: </label>DPer 510.5 Am351 June - August 2021 v143 no. 3-4