Javaid, Qaisar, Memon, Farida, Talpur, Shahnawaz, Arif, Muhammad, AND Awan, Muhammad Daud. " Mining Frequent Item Sets in Asynchronous Transactional Data Streams over Time Sensitive Sliding Windows Model" Mehran University Research Journal of Engineering and Technology [Online], Volume 35 Number 4 (1 October 2016)