Khalid, S., Sehat Ullah, and A. Alam. “Merging Assistance Function With Task Distribution Model to Enhance User Performance in Collaborative Virtual Environment”. The Nucleus 53, no. 2 (June 12, 2016): 147–154. Accessed April 28, 2024. http://thenucleuspak.org.pk/index.php/Nucleus/article/view/1164.