Shakeel Ahmed Khoja Faisal Sana Abid Karim Arif Ali Rehman Implementing Constructivist Pedagogical Model in Dynamic Distance Learning Framework. 191-201 2008 IMTIC http://dx.doi.org/10.1007/978-3-540-89853-5_21 conf/imtic/2008 db/conf/imtic/imtic2008.html#KhojaSKR08