Joon Young Lee Nahi Hong Soomin Kim 0001 JongHwan Oh Joonhwan Lee Smiley face: why we use emoticon stickers in mobile messaging. 760-766 2016 MobileHCI Adjunct https://doi.org/10.1145/2957265.2961858 conf/mhci/2016a db/conf/mhci/mhci2016a.html#LeeHKOL16