Author,Title,Edition,Publisher,Year,Series,Number,ISBN,ISSN,URL
"Shchepakina, E. A. (Elena Anatolʹevna) and Sobolev, V. A. (Vladimir Andreevich) and Mortell, Michael P.",Singular perturbations : introduction to system order reduction methods with applications,,Springer,2014,Lecture notes in mathematics,,9783319095691,,https://cir.nii.ac.jp/crid/1130000796054480640