%0 Journal Article %A Tomoya Hattai %A Tatsuro Ito %T On a Certain Subalgebra of $U_q(\widehat{\mathfrak{sl}}_2)$ Related to the Degenerate $q$-Onsager Algebra %J Symmetry, integrability and geometry: methods and applications %D 2015 %V 11 %U http://geodesic.mathdoc.fr/item/SIGMA_2015_11_a6/ %G en %F SIGMA_2015_11_a6