2024-03-29T07:19:13Zhttps://eprints.lib.hokudai.ac.jp/dspace-oai/requestoai:eprints.lib.hokudai.ac.jp:2115/702272019-04-16T17:04:20Zhdl_2115_45007hdl_2115_116G2- GEOMETRY IN CONTACT GEOMETRY OF SECOND ORDERYAMAGUCHI, KEIZO410Department of Mathematics, Hokkaido UniversityDepartmental Bulletin Paperapplication/pdfhttp://hdl.handle.net/2115/70227info:doi/10.14943/84415https://eprints.lib.hokudai.ac.jp/dspace/bitstream/2115/70227/4/G_2-geometry0.pdfHokkaido University Preprint Series in Mathematics11111312018-05-15engpublisher