Author,Title,Edition,Publisher,Year,Series,Number,ISBN,ISSN,URL "森本, 徹",Equivalence problems of the geometric structures admitting differential filtrations,,"Department of Mathematics, Hokkaido University",1987,Hokkaido University technical report series in mathematics = 北海道大学数学講究録,,,,https://cir.nii.ac.jp/crid/1130855256670096921