Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Kyeong Hah Roh and Yong Hah Lee,Designing Tasks of Introductory Real Analysis to Bridge a Gap Between Students’ Intuition and Mathematical Rigor: the Case of the Convergence of a Sequence,International Journal of Research in Undergraduate Mathematics Education,2198-9745,Springer Science and Business Media LLC,2016-10-28,3,1,34-68,https://cir.nii.ac.jp/crid/1360857596189779584,https://doi.org/10.1007/s40753-016-0039-9