Author,Title,Edition,Publisher,Year,Series,Number,ISBN,ISSN,URL "Gelʹfand, Izrailʹ Moiseevich and Shilov, Georgiĭ Evgenʹevich and Mayer, Meinhard Edwin",Theory of differential equations,,Academic Press,1967,Generalized functions,,0122795032,,https://cir.nii.ac.jp/crid/1130000794427499648