The following publications are possibly variants of this publication:
- A New Ultralightweight RFID Authentication Protocol for Passive Low Cost Tags: KMAPUmar Mujahid Khokhar, Muhammad Najam-ul-Islam, Shahzad Sarwar. wpc, 94(3):725-744, 2017. [doi]
- A New Ultralightweight RFID Mutual Authentication Protocol: SASI Using Recursive HashUmar Mujahid Khokhar, Muhammad Najam-ul-Islam, Atif Raza Jafri, Qurat Ul Qurat-ul-Ain, Muhammad Ali Shami. ijdsn, 2016, 2016. [doi]