 E. Estaji, On the graph associated to a lattice, 3rd Algebraic Combinatorics Conference, February 2425, 2011, Esfahan University, Iran

 E. Estaji, Y. Alizadeh On the Wiener index of Sierpinski graphs, 46th Annual Iranian Mathematics Conference, August 2528, 2015, Yazd University, Iran

 E. Estaji, Y. Alizadeh dself Center Graphs and Graph Operations, 46th Annual Iranian Mathematics Conference, August 2528, 2015, Yazd University, Iran

 E. Estaji, Y. Alizadeh, An algorithmic approach to distinguishing number problem, 8th Conference on Algebraic Combinatorics and Graph Theory, October 78, 2015, Qazvin, Iran

 E. Estaji, Y. Alizadeh On the topological dimension of graphs, 8th Conference on Algebraic Combinatorics and Graph Theory, October 78, 2015, Qazvin, Iran

 E. Estaji, Y. Alizadeh Some results on distinguishing number of graphs, 25th Iranian Algebra Seminar, July 1920, 2016, Sabzevar, Iran

 E. Estaji, Y. Alizadeh Graph orbits and complexity of topolgical indices, 25th Iranian Algebra Seminar, July 1920, 2016, Sabzevar, Iran
