Jeonghyun Kim. Task Difficulty in Information Searching Behavior: Expected Difficulty and Experienced Difficulty. TCDL Bulletin, 2(1), 2005. [doi]
@article{Kim05-35, title = {Task Difficulty in Information Searching Behavior: Expected Difficulty and Experienced Difficulty}, author = {Jeonghyun Kim}, year = {2005}, url = {http://www.ieee-tcdl.org/Bulletin/v2n1/kim/kim.html}, researchr = {https://researchr.org/publication/Kim05-35}, cites = {0}, citedby = {0}, journal = {TCDL Bulletin}, volume = {2}, number = {1}, }