@article{Liu Shusen:22, author = {Liu Shusen,Xu Zhiqiang}, title = {Modelling Z39.50 Protocol with DFA andBuilding an Object-Oriented Frame for Implementation}, publisher = {Data Analysis and Knowledge Discovery}, year = {1997}, journal = {Data Analysis and Knowledge Discovery}, volume = {13}, number = {6}, eid = {22}, numpages = {4}, pages = {22}, keywords = {}, url = {https://manu44.magtech.com.cn/Jwk_infotech_wk3/EN/abstract/article_2476.shtml}, doi = {10.11925/infotech.1003-3513.1997.06.05} }