WASET
Mowla, D. , Rasti, N. , Keshavarz, P.. "Transesterification of Waste Cooking Oil for Biodiesel Production Using Modified Clinoptilolite Zeolite as a Heterogeneous Catalyst". World Academy of Science, Engineering and Technology, Open Science Index 117, International Journal of Chemical and Molecular Engineering, (2016), 10(9), 1201 - 1205.