@misc {IOPORT.70347870, author = {Shi, Peipei and Zhu, Bo and Youssef, Amr M.}, title = {A framework to strengthen password authentication using mobile devices and browser extensions}, howpublished = {ISSPIT, 73-78 (2010).}, year = {2010}, doi = {10.1109/ISSPIT.2010.5711728}, identifier = {70347870}, }