Author,Title,Edition,Publisher,Year,Series,Number,ISBN,ISSN,URL
"Eells, James and Ratto, Andrea",Harmonic maps and minimal immersions with symmetries : methods of ordinary differential equations applied to elliptic variational problems,,Princeton University Press,1993,Annals of mathematics studies,,"0691033218,069110249X",,https://cir.nii.ac.jp/crid/1130000796431716096