Author,Title,Edition,Publisher,Year,Series,Number,ISBN,ISSN,URL
"Ėlʹsgolʹt︠s︡, L. Ė. (Lev Ėrnestovich)",Qualitative methods in mathematical analysis,,American Mathematical Society,1964,Translations of mathematical monographs,,,,https://cir.nii.ac.jp/crid/1130282271376679040