Searcher's perceptions for query reformulation behavior on the web. - Kyoungsik Na; Min Sook Park (ASIST, 2012)

When two heads are better than one: Query behavior, cognitive load, search time, and task type in pairs versus individuals. - Kyoungsik Na; Jisu Lee (Aslib J. Inf. Manag., 2016)

The effects of cognitive load on query reformulation: mental demand, temporal demand and frustration. - Kyoungsik Na (Aslib J. Inf. Manag., 2021)