Author,Title,Edition,Publisher,Year,Series,Number,ISBN,ISSN,URL
"Büchi, J. Richard and Siefkes, Dirk",The monadic second order theory of all countable ordinals,,Springer,1973,Lecture notes in mathematics,,"3540063455,0387063455",,https://cir.nii.ac.jp/crid/1130000797424796160