中国科学院数学与系统科学研究院期刊网
Cryptanalysis and improvement of Park et al.'s remote user authentication protocol
XIE Qi;CHEN De-ren;YU Xiu-yuan
Systems Engineering - Theory & Practice . 2010, (10): 1877 -1882 .  DOI: 10.12011/1000-6788(2010)10-1877