B. J. Wielinga, B. Bredeweg and J. A. Breuker, “Knowledge Acquisition for Expert Systems,” In: R. T. Nossum, Ed., Advanced Topics in Artificial Intelligence, Springer- Verlag, Berlin, 1988, pp. 25-58.
 J. Wei, R. K. Srihari, H. H. Hay and W. Xin, “Improving Knowledge Discovery in Docu-ment Collections through Combining Text Retrieval and Link Analysis Techniques,” Seventh IEEE International Conference on Data Mining, Omaha, 28-31 October 2007, pp. 193-202.
 C. Osvaldo, “KAMET: A Comprehensive Methodology for Knowledge Acquisition from Multiple Knowledge Sources,” Expert Systems with Applications, Vol. 14, No. 1-2, 1998, pp. 1-16. doi:10.1016/S0957-4174(97)00064-X
 C. Wang, H. Lan and H. Xie, “An Integrated Model of Knowledge Acquisition: Empirical Evidences in China,” International Conference on In-formation Management, Innovation Management and Indus-trial Engineering, Taipei, 19-21 December 2008, pp. 335-338.
 N. Lavrac and I. Mozetic, “Second Generation Knowledge Acquisition Methods and Their Application to Medicine,” Deep Models for Medical Knowledge Engineering, Elsevier, New York, 1992, pp. 177-198.
 ?. Akg?bek, Y. S. Aydin, E. ?ztemel and M. S. Aksoy, “A New Algorithm for Automatic Knowledge Ac-quisition in Inductive Learning,” Knowledge-Based Systems, Vol. 19, No.6, 2006, pp. 388-395. doi:10.1016/j.knosys.2006.03.001
 R. Valencia-Garc??a, J. M. A. Ruiz-Sánchez, P. J. Vivancos-Vicente, et al., “An Incremental Approach for Discovering Medical Knowledge from Texts,” Expert Systems with Applications, Vol. 26, No. 3, 2004, pp. 291- 299. doi:10.1016/j.eswa.2003.09.001
 L. Xu, W. Dong, J. H. Wang and S. S. Gu, “A Method of the Knowledge Acquisition Using Rough Set Knowledge Reduction Algorithm Based on PSO,” 7th World Congress on Intelligent Control and Automation, Chongqing, 25-27 June 2008, pp. 5321-5326.
 H. T. Wang, G. C. Cao and Y. Gao, “Design and Implementation of a System for Ontology-Mediated Knowledge Acquisition from Semi-Structured Text,” Chinese Journal of Computers, Vol. 12, No. 4, 2005, pp. 2010- 2018.
 V. Nastase and M. Strube, “Decoding Wikipedia Categories for Knowledge Acquisition,” Proceedings of the 23rd National Conference on Artificial Intelligence, Chicago, 13-17 July 2008, pp. 1219-1224.
 J. Z. Li, X. Z. Fan and X. G. Lu, “Influence of Ammonium Perchlorate and Aluminum Powder on the Combustion Characteristics of AP-CMDB Propellant,” Chinese Journal of Explosive & Propellants, Vol. 4, No. 31, 2008, pp. 61-63.