![[ACM Press the 1st ACM SIGCHI symposium - Pittsburgh, PA, USA (2009.07.15-2009.07.17)] Proceedings of the 1st ACM SIGCHI symposium on Engineering interactive computing systems - EICS '09 - How usable are operational digital libraries]()
[ACM Press the 1st ACM SIGCHI symposium - Pittsburgh, PA, USA (2009.07.15-2009.07.17)] Proceedings of the 1st ACM SIGCHI symposium on Engineering interactive computing systems - EICS '09 - How usable are operational digital librariesZhang, Xiangmin; Liu, Jinjing; Li, Yuelin; Zhang, Ying · 2009