Ghalamzan, Ali, Nourbakhsh, Amirabbas, Alafghalamzan, Farshad, Chami, Akbar. Investigation of Sodium effect on synthesis of Si3N4 by using carbothermal reduction and nitridation process from  MCM-48/Saccharose precursor. Advanced Processes in Materials Engineering. 2016;10(1):149-157.